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Topic: Stem group

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	Crown group - Wikipedia, the free encyclopedia
		Stem and crown groups are hierarchical; thus, an extinct crown-group bird may lie in the stem group of a subset of the birds, such as the passerines; and stem-group birds lie, together with crown group birds and crocodiles and several extinct groups, in the crown group of the Archosauria.
		A crown group and its stem group considered together are known as the total group.
		Stem group organisms always lack one or more features that are present at the base of the crown group to which they are attached.
	en.wikipedia.org /wiki/Crown_group (593 words)

	[No title]
		If the wings of both groups would be regarded as homologous one would be forced to assumed that all other mammals as well as lizards, turtles and crocodiles, have convergently transformed their fore legs from wings into walking legs, which would be a quite absurd idea indeed.
		Groups that include a common ancestor and some (but not all) of its descendants, were often called "monophyletic" too (monophyla sensu MAYR or REMANE), but these do not really exist in nature (independent from human recognition), but are mere constructions of the human mind (logical classes), that are arbitrarily defined by certain characters.
		Examples for polyphyletic groups would be a grouping of pterosaurs, birds, and bats as (hypothetical) taxon "flying vertebrates", the old taxon Pachydermata for a grouping of the thick-skinned hippos, rhinos and elephants, or the taxon Haemothermia (recently endorsed by LOVTRUP and GARDINER) for a grouping of haemothermic birds and mammals.
	www.rhododendron.dk /termeg.htm (10960 words)

	Human Pluripotent Stem Cell Research: Recommendations for CIHR-Funded Research - CIHR
		Stem cell research, particularly on human ES cells, has raised a number of ethical concerns, related to both the source and potential use of the cells and has been the subject of much public debate in the media in Canada and worldwide.
		Stem cells have a unique characteristic that distinguishes them from all other cell types derived from mammalian tissue: they have the ability to divide while maintaining their stem cell identity ("self-renewal"), and, in response to certain stimuli, they can differentiate to form more specialized cells.
		Stem cells isolated from embryos at the earliest stages of development can be used to derive stem cell lines capable of indefinite growth in the laboratory and with the potential to produce all types of specialized cells.
	www.cihr-irsc.gc.ca /e/1489.html (9170 words)

	Stem Cell Plasticity Working Group, National Heart, Lung, and Blood Institute
		Currently, the issue of stem cell homogeneity is a complication in all enrichment strategies, and is very difficult to rigorously address; given that in vivo transplantation is the only reliable assay for the most primitive stem cell population.
		Mulligan summarized his studies by suggesting that a variety of adult stem cell populations may exist and have common functional properties, and that the ability of the different stem cell populations to give rise to particular cell types may be dependent upon local environmental stimuli.
		Collaboration among research groups was identified as the key element in our ability to better substantiate this concept and to characterize the biological mechanisms that might drive the process.
	www.nhlbi.nih.gov /meetings/scplast.htm (3063 words)

	Ad Hoc Working Group on Stem Cell Research - A Discussion Paper - Human Stem Cell Research - Opportunities for Health ...
		Stem cells are cells found in developing animals and to a lesser extent in adults, that have a unique property: the ability to proliferate and remain undifferentiated (self renewal), and the ability to differentiate into more specialized tissues.
		Stem cells have a wide range of "potency", ranging from embryonic stem (ES) cells that are capable of differentiating into all cell types (pluripotent cells), to stem cells found in adult tissues such as brain, muscle, and blood, that have a more limited range (restricted potency).
		It is the ability of stem cells to multiply and develop into different cell types that has generated the recent excitement in the scientific community and in the media relating to their therapeutic potential.
	www.cihr-irsc.gc.ca /e/2887.html (902 words)

	Top science group offers stem cell ethics rules / Oversight committees, donor consent sought for emerging, ...
		Stem cells, which form in the first few days of a developing embryo, are capable of becoming any type of cell in the body.
		The effect of that rule would be to eliminate some stem cell lines already in use because they were obtained from embryos created with sperm from anonymous donors who were not informed about their use.
		The panel recommended that while it may be permissible to use human embryonic stem cells in mice, researchers would be prohibited from introducing human stem cells in the brains of monkeys and other primates because of concerns about how it might affect their mental function or brain structure.
	sfgate.com /cgi-bin/article.cgi?file=/c/a/2005/04/27/MNGMICG0SH1.DTL (1267 words)

	Arthropoda
		None of the limbs of early derivatives of the euarthropodan stem lineage possessed a rigid basipod nor an endopod or a paddle-shaped exopod" (Maas and Waloszek 2001, p.
		The group is herein considered to include the sub-taxa Trilobitoidea, Arachnomorpha, and Mandibulata, wherein lie the great diversity of familiar spiders, scorpions, crustaceans, myriapods and insects, as well as many of the famously problematic stem group arthropods known only from fossils: the marrellomorphs, Burgessia, and so on.
		Discussion: Cotton and Braddy 2000 considers the arachnomorphs with particular regard to the fossil stem group organisms, many of which are notorious problematica, and derives a phylogeny with the marrellomorphs at the base of two large clades: a trilobite clade and a chelicerate clade.
	www.peripatus.gen.nz /Taxa/Arthropoda (4669 words)

	Genetics and Society: Past News: Nurses group opposes stem-cell plan
		Though the California Nurses Association officially favors embryonic stem cell research, the organization Thursday announced its opposition to Proposition 71, the ballot measure that would fund stem cell studies with a $3 billion bond issue.
		Leaders of the group, representing about 58,000 registered nurses statewide, said they felt the measure could allow private drug companies to patent discoveries and benefit from the research at public expense.
		Thursday's announcement from the CNA and several other women's health groups places them on the same side as anti-abortion groups and the state Republican Party, previously the highest-profile opponents to Proposition 71.
	www.genetics-and-society.org /newsdisp.asp?id=619 (494 words)

	Group Four: Stem Cell Research (Site not responding. Last check: 2007-10-05)
		I believe that the couples should be able to donate the extra embryos for stem cell research.
		Secondly, stem cell research could lead to saving many lives.
		In case you don't know, stem cells may be able to be used to create new organs for humans.
	www.class.uidaho.edu /ngier/_disc1/0000030e.htm (208 words)

	USGS CIRC 1159 subpage: Major issues and findings - Fish Communities, Stream Habitat, and Water Quality in the San ...
		Four groups of sites were identified on the basis of fish communities, water chemistry, and habitat quality: a San Joaquin Main Stem group, a Lower Tributary group, a Stanislaus River group, and an Upper Tributary group.
		The San Joaquin Main Stem group was characterized by high percentages of introduced species tolerant of harsh environmental conditions, particularly the fathead minnow, red shiner, threadfin shad, and inland silverside (all referred to as the San Joaquin Main Stem species).
		Thus, these groups are most indicative of large-scale, natural gradients and less related to environmental impairment than the groups obtained from the analysis of 20 low-elevation sites.
	pubs.usgs.gov /circ/1998/circ1159/sec5.html (1321 words)

	CALIFORNIA / Stem cell group ready to disburse funds / Institute, critics near agreement on conflicts, meetings
		But even some staunch critics of the stem cell institute say the biggest fight seems to be winding down, after an institute subcommittee agreed to a set of interim "policy enhancements" that will require broader financial disclosures and assure most working group meetings will be public.
		The stem cell institute was created last fall by passage of Proposition 71, which set up a 29-member board, known as the Independent Citizens Oversight Committee, to set policy and decide on grant proposals.
		Meanwhile, stem cell scientists hoping to be on the receiving end of the grants are moving ahead with their projects -- assuming a solution will be found.
	www.sfgate.com /cgi-bin/article.cgi?file=/chronicle/archive/2005/07/02/BAGO4DI5N71.DTL (864 words)

	Stem group - Wikipedia, the free encyclopedia
		In palaeontology, a stem group is a systematic grouping that is required to accommodate fossils in the classification of organisms.
		A stem group lies basally to a crown group, consisting of its most closely related living relatives.
		This page was last modified 13:57, 26 September 2004.
	en.wikipedia.org /wiki/Stem_group (63 words)

	Public interest group calls stem cell institute proposals "inadequate"
		CIRM, which is to distribute $3 billion to fund stem cell research, remains mired in controversy.
		The working groups are key bodies that will review grant requests and set research standards, among other functions.
		Research by the Sacramento Bee reported this past weekend indicate that some members of the Grant Funding Working Group have personal financial interests in companies that conduct, or are financially connected to, stem cell research.
	www.genetics-and-society.org /resources/cgs/20050711_cirm_press.html (640 words)

	BBC NEWS \| England \| Cambridgeshire \| Mary Archer heads stem cell group
		Mary Archer is to lead a network of scientists examining developments in stem cell research.
		Stem cells, found in human tissue, bone marrow and early stage embryos, are regarded as a potential source of cells for regeneration of tissue.
		"The east of England's strength in stem cell research is already apparent from the range of research partners and support organisations that are involved in the network.
	news.bbc.co.uk /1/hi/england/cambridgeshire/3704038.stm (282 words)

	CBS News \| Group Pushes Stem Cell Guidelines \| April 26, 2005 13:30:11
		Embryonic stem cells form in the first few days of a developing embryo and are capable of becoming any type of cell in the body.
		Donors must give their consent before their embryo could be used to produce stem cells and they should be informed that they have the right to withdraw their consent at any point before a stem cell line is derived.
		No animal embryonic stem cells should be transplanted into a human embryo and approval by a review committee should be secured before any human embryonic stem cells are put into an animal.
	www.cbsnews.com /stories/2005/04/26/tech/main690988.shtml (545 words)

	Today's Stem Cell Research
		Despite their promise for research and therapeutic purposes, stem cells are difficult to grow in the laboratory and scientists do not know how to reliably direct them to become a specific cell type.
		Stem cell research isn't all that puts John Hopkins in the top of list for university leaders in innovation..
		A part of the placenta called the amnion, or the outer membrane of the amniotic sac, is comprised of cells that have strikingly similar characteristics to embryonic stem cells, including the ability to express two key genes that give embryonic stem cells their unique capability for develo...
	www.stemnews.com (1941 words)

	Israeli Stem Cell Group Joins Cleveland Clinic (Site not responding. Last check: 2007-10-05)
		The Cleveland group works with adult stem cells, while Gepstein and his Technion colleagues work with embryonic stem cells.
		The Technion is one of 14 institutions in the world that has developed stem cell lines that meet President Bush's criteria; it is, therefore, eligible for federal funding, according to a National Institutes of Health Web site.
		The goal now, Penn said, is to " make sure we're recruiting the right stem cells from the bone marrow and to convince them to differentiate into cardiac myocytes," or contracting cells.
	www.ishitech.co.il /1203ar4.htm (395 words)

	Folding Problems of the 5' Splice Site Containing the P1 Stem of the Group I Thymidylate Synthase Intron. SUBSTRATE ...
		Group I introns are found in rRNAs, tRNAs, or mRNAs (1, 2).
		Structure of the cryptic P1 stem and splicing in the presence of neomycin.
		An in vitro trans-cleaving ribozyme for the td intron was constructed to study folding of the 5' splice site-containing P1 stem.
	www.jbc.org /cgi/content/full/277/20/17987 (4934 words)

	Advocacy Group Applauds Stem Cell Institute \| Today's Stem Cell Research
		While plans are underway to secure interim funding for training grants and projects, the Alliance has called on the plaintiffs to drop their lawsuit so the will of California voters can be carried out and the research can move forward.
		The mission of the Alliance for Stem Cell Research (ASCR) is to advance the field of stem cell research and regenerative medicine and to educate the public about its potential and progress.
		Today, the Elizabeth Glaser Pediatric AIDS Foundation is a world- renowned patient advocacy group and the leading national non-profit dedicated to identifying, preventing and conducting critical pediatric AIDS research.
	www.stemnews.com /archives/001121.html (400 words)

	Roll Call Profiles New Embryonic Stem Cell Advocacy Group StemPAC (Site not responding. Last check: 2007-10-05)
		, the group is "threatening to make the [embryonic stem cell] debate less about the science of the issue and more about the political ramifications" for legislators who oppose broad federal funding for the research.
		Hlinko says the group will push to form a nationwide grassroots campaign devoted to pressuring wavering lawmakers to support stem cell research using unused embryos created for fertility procedures that otherwise would be destroyed or discarded.
		StemPAC's strategy differs "significantly" from other groups that promote embryonic stem cell research, such as the Republican Main Street Partnership and the Coalition for the Advancement of Medical Research, because few of them take a hard-line political approach or attempt grassroots efforts that can compete with the efforts of some abortion-rights opponents.
	www.medicalnewstoday.com /medicalnews.php?newsid=28893&nfid=mnf (325 words)

	Wisconsin Advanced Technology Advocates, Inc.: Stem cell group plans $20m float
		Its founder, stem cell scientist Silviu Itescu, is a biotechnology adviser to the Pratt family's Thorney Investments.
		He has identified specific stem cells in adult human bone marrow that help to stimulate blood vessel growth in the heart, and developed a way of using the cells to prevent the death of heart cells and improve cardiac function after a heart attack.
		It is believed an adult stem cell technology will have fewer regulatory and ethical hurdles to cross than embryonic stem cell-based techniques.
	www.wistech.org /2004/10/stem_cell_group.html (206 words)

	Blue Mass. Group: MA stem cell update
		The state legislature's Joint Committee on Economic Development and Emerging Technologies released its proposed stem cell research bill yesterday.
		The revised bill is more detailed that the original proposal to which we linked in this post.
		Romney, you will recall, opposes research on stem cells created via somatic cell nuclear transfer (or "therapeutic cloning"), but supports research on "surplus" fertilized embryos at fertility clinics.
	bluemassgroup.typepad.com /blue_mass_group/2005/03/ma_stem_cell_up.html (493 words)

	NOT-OD-02-049: PROCEDURES FOR SUBMISSION OF COMPLIANCE DOCUMENTS TO THE HUMAN PLURIPOTENT STEM CELL REVIEW GROUP FOR ...
		Embryonic germ cells are pluripotent stem cells derived from fetal tissue and are distinct from human embryonic stem cells that are derived from human embryos.
		This notice does not pertain to human embryonic stem cells.
		An assurance that the stem cells to be used in the research were or will be obtained through a donation or through a payment that does not exceed the reasonable costs associated with the transportation, processing, preservation, quality control and storage of the stem cells, 6.
	grants.nih.gov /grants/guide/notice-files/NOT-OD-02-049.html (650 words)

	Stamcellsbiologi (Site not responding. Last check: 2007-10-05)
		The Hematopoietic Stem Cell (HSC) Group is located in the new Biomedical Center, and is one of the research groups at the new Stem Cell Institute (located on B10) within the Lund Stem Cell Center.
		On the same floor is located a modern DNA microarray facility and an internationally competitive bioinformatics and computational biology group.The HSC group also has approximately 250m2 animal facilities, including space in barrier and transgenic facilities with direct access to irradiation devices and other required equipment.
		The HSC Group interacts closely with the research group of Professor Stefan Karlsson that focuses on molecular regulation of hematopoiesis and development of HSC based on gene therapy, providing access to a state of the art viral vector core facility and a GMP quality graft engineering facility at the University Hospital.
	www.stemcell.lu.se /stemcell.html (204 words)

	Stem Cell group warns N.Y. in danger of losing top scientists to N.J. - 2005-03-24
		Stem Cell group warns N.Y. in danger of losing top scientists to N.J. Proponents of stem cell research in New York are warning that the state of New Jersey is making a well-funded push to recruit scientists away from New York institutions.
		Earlier this week, the group called for raising the state's tax on cigarettes by 50 cents a pack to generate an extra $300 million a year -- with $100 million going to stem cell research.
		Advocates of embryonic stem cell research say it holds the promise of reversing medical conditions now considered permanent, such as paralysis.
	www.bizjournals.com /albany/stories/2005/03/21/daily35.html (655 words)

	SAN FRANCISCO / Stem cell group sets deadline for bids
		San Francisco and San Diego are considered the main contenders to be the stem cell institute's headquarters city, although several other cities, including Los Angeles, Sacramento, Fresno and San Jose, are expected to submit proposals.
		A site-selection subcommittee of the stem cell institute's governing board, known as the Independent Citizens Oversight Committee, met by teleconference Tuesday to set out a timetable and formal selection process.
		Most of the money is earmarked for work involving embryonic stem cells that can't be financed by the National Institutes of Health under rules adopted by the Bush administration.
	www.sfgate.com /cgi-bin/article.cgi?f=/c/a/2005/01/26/BAG0DB00B61.DTL (295 words)

	The STEM Group – Condensed Matter Sciences Division, ORNL
		The STEM Group – Condensed Matter Sciences Division, ORNL
		Looking straight down on a silicon crystal in the direction <112>, the atoms line up in closely-spaced pairs of columns with just 0.78 angstrom between each column in a pair.
		The image was obtained using a 300 kV VG Microscopes HB603U scanning transmission electron microscope (STEM) equipped with a Nion aberration corrector, by Matt Chisholm, with processing by Albina Borisevich and Andy Lupini, and aberration correction by Pete Nellist et al., Nion Co.
	stem.ornl.gov (154 words)

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