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	Rhesus Factor
		A, B AB, O), we all have two Rhesus genes, called D or d, depending on whether we are Rhesus positive or negative and babies inherit one of these from each parent.
		At the beginning of a pregnancy, a woman`s blood is tested for the Rh(D) factor and, if she is found to be Rh(D) negative, further tests will be performed throughout the pregnancy to ensure that her blood is not producing Rh antibodies against her baby`s blood (see Antibodies and Their Effects).
		However, this test is only performed if a woman is already Rh(D) Rhesus iso-immune and her partner is known to possess both a positive and negative gene (d/D or D/d).
	www.childbirthsolutions.com /articles/preconception/rhesus (0 words)

	Rhesus disease Introduction - Health encyclopaedia - NHS Direct
		Rhesus disease happens when antibodies in a mother's blood attack her baby's blood cells.
		If rhesus disease occurs and is not treated, the effects of the jaundice in the newborn baby can lead to learning difficulties, deafness and blindness.
		Rhesus disease is also known as haemolytic disease of the newborn.
	www.nhsdirect.nhs.uk /articles/article.aspx?articleID=319 (225 words)

	Genetics of Rhesus Factor - Kromosoft Knowledgebase of Genetics Articles
		Rhesus factor, so named after the Rhesus monkey, where it was first identified, is an important genetic component of human blood.
		Rhesus factor is a special protein found on the surface of the red blood cells.
		Rhesus (or the D antigen) is inherited on one locus, on the short arm of the first chromosome, 1p36.2-p34, with two alleles, of which Rh+ is dominant and Rh- is recessive.
	www.kromosoft.com /resources/KB/Abstracts/GeneticsOfRhesusFactor.php (203 words)

	Children First for Health - Teens - Health - Conditions - Rhesus factor disease (Site not responding. Last check: )
		In future, if her baby is rhesus positive, the antibodies will attack the baby’s red blood cells as an ‘enemy’ which could cause problems at birth (rhesus factor disease) or in extreme cases, a miscarriage.
		Rhesus factor disease can be prevented if the mother is given an injection of anti-D gamma globulin, which stops her developing antibodies towards the rhesus protein, but it will only work if it is given within 60 hours of giving birth.
		Rhesus factor disease can have serious consequences for mother and baby, but routine blood tests during pregnancy identify the majority of cases, so that treatment can be given after labour.
	www.childrenfirst.nhs.uk /teens/health/conditions/r/rhesus_factor.html (668 words)

	AllRefer.com - Rh factor (Anatomy And Physiology) - Encyclopedia
		The Rh, or rhesus, factor was discovered in 1940 by K. Landsteiner and A. Wiener, when they observed that an injection of blood from a rhesus monkey into rabbits caused an antigenic reaction in the serum component of rabbit blood (see immunity).
		The blood of the remaining 15% lacked the factor and was typed Rh negative.
		Besides the Rh factor, human red blood cells contain a large number of additional antigenic substances that have been classified into many blood group systems (see blood groups); however, the Rh system is the only one, aside from the ABO system, that is of major importance in blood transfusions.
	reference.allrefer.com /encyclopedia/R/Rhfactor.html (493 words)

	Pregnancy week by week - pregnancy calendar - pregnancy stages trimesters - parenting websites - mum dad baby maternity ...
		Therefore, even if you already know what your blood group and Rhesus factor are from a previous blood test (or through donating blood at the blood bank), it is expected that this test be repeated and confirmed with each pregnancy, particularly to screen for antibodies.
		Rhesus factor and antibodies are fully explained in the next section.
		Your Rhesus factor is recorded on your pregnancy record with your blood group as being either 'Positive' or 'Pos' (for example 'A Pos') or 'Negative' or 'Neg' (for example 'O Neg') or simply written as a '+' sign or '- ' sign (such as 'B+' or 'AB-').
	www.birth.com.au /class.asp?class=6625&page=6 (1994 words)

	Rhesus Factor
		Rhesus (Rh) disease (also called Hemolytic disease or Erythroblastosis Fetalis) takes weeks rather than days to affect the unborn child, so there would be ample time to check on the baby`s welfare and act accordingly.
		The term `Rhesus disease` may lead you to believe that the condition is an illness which could affect the mother`s health.
		If the mother's partner is known to be heterozygous (has both negative and positive genes), the baby's Rhesus factor is determined by either chorionic villus sampling (CVS) at around 11-12 weeks or amniocentesis at around 12-14 weeks.
	www.childbirthsolutions.com /articles/preconception/rhesus/index.php (0 words)

	The Rhesus Factor
		If your red blood cells contain a substance known as rhesus factor, you are rhesus, or Rh, positive.
		If a woman who is Rh negative conceives a baby by a man who is Rh positive and the baby, in turn, is Rh positive, the woman may become sensitized to the Rh positive blood at eh time of delivery.
		Antibodies develop in the mother to combat Rh positive blood and afterward remain.
	www.womenfitness.net /rhesus_factor.htm (0 words)

	rhesus factor
		Group of antigens on the surface of red blood cells of humans which characterize the rhesus blood group system.
		Most individuals possess the main rhesus factor (Rh+), but those without this factor (Rh-) produce antibodies if they come into contact with it.
		The name comes from rhesus monkeys, in whose blood rhesus factors were first found.
	www.tiscali.co.uk /reference/encyclopaedia/hutchinson/m0006868.html (336 words)

	Rhesus Factor
		A group of antigens in the red blood cells that, besides the blood type, characterize the blood as Rhesus positive or Rhesus negative, essential for safe blood transfusion; Also designated as Rh+ or Rh-.
		English words defined with "rhesus factor": Rh antibody.
		Translations for "rhesus factor"; alternative meanings/domain in parentheses.
	www.websters-online-dictionary.org /definition/english/rh/rhesus+factor.html (269 words)

	BBC - Health - Ask the doctor - Pregnancy and rhesus disease
		Because you're rhesus negative, there's a risk that any babies you have may suffer from haemolytic disease of the newborn, also known as rhesus disease or blue baby syndrome.
		People who are rhesus positive have a compound called D antigen in their blood, while people who are rhesus negative don't.
		If the baby is rhesus positive and has the D antigen, then this triggers a reaction in the mother who'll start making antibodies to the D antigen.
	www.bbc.co.uk /health/ask_the_doctor/pregnancyrhesus.shtml (626 words)

	rhesus factor - Encyclopedia.com (Site not responding. Last check: )
		rhesus factor (Rh factor) Any of a group of antigens found on the surface of erythrocytes (red blood cells).
		Rh factor is present in c.85% of humans (Rh+).
		The antigens were first identified in the blood of rhesus monkeys.
	www.encyclopedia.com /doc/1O142-rhesusfactor.html (328 words)

	ReadingParents.com - (Site not responding. Last check: )
		Rhesus factor of fetus overcomes a placenta barrier and comes to a mother?s blood.
		The first of them is to learn your blood group and Rhesus factor as much earlier, and also a future father?s blood group and Rhesus factor.
		During the first pregnancy, a conflict, caused by an incompatibility between mother?s and fetus?s blood according to a blood group and Rhesus factor, seldom develops, as women?s antibodies are being produced in not enough quantity.
	www.readingparents.com /articles/Rhesusconflict.php (1551 words)

	RhoGAM
		The "Rhesus factor" received its name because it was first discovered on the red blood cells of Rhesus monkeys.
		The Rhesus factor is a blood group antigen (molecule) that most people have on their red blood cells (the cells that carry the oxygen in the blood).
		The mother’s immune system recognizes the Rhesus factor as foreign and attacks it with antibodies, as if it were a virus or bacterium.
	www.ohiorepromed.com /info_rhogam.htm (622 words)

	Blood type Summary
		In 1937 Landsteiner and Wiener were studying the M factor in apes and monkeys, focussing on its action as an agglutinogen (its ability to clump red blood cells together).
		Rh factor is also a critical to the blood compatibility of parents.If an Rh-negative woman gives birth to an Rh-positive child fathered by an Rh- positive man, there is a risk that she will become sensitized to the Rh factor in her baby's blood and begin to produce anti-Rh antibodies.
		FFP is quick-frozen to retain labile clotting factors V and VIII and usually administered to patients who have a potentially fatal clotting problem caused by a condition such as advanced liver disease, overdose of anticoagulant, or disseminated intravascular coagulation (DIC).
	www.bookrags.com /Blood_type (8432 words)

	Bloed
		In tegenstelling tot de bloedgroepen A, B en 0 hebben Rhesus D-negatieve mensen geen 'natuurlijk voorkomende'-antistoffen tegen de Rhesus D-factor.
		Rhesus D-negatieve mensen maken meestal antistoffen tegen de Rhesus D-factor als ze in aanraking zijn geweest met deze bloedgroep.
		Er is naast Rhesus D nog een groot aantal bloedgroepen op rode bloedcellen waartegen de ontvanger van bloed antistoffen zou kunnen maken.
	www.thalassemie.nl /bloed.htm (1573 words)

	Rhesus factor disease
		The rhesus factor protein is the next most important one after the A and B proteins.
		If a baby is rhesus positive but the mother is rhesus negative, then the mother could become sensitive to the baby’s blood.
		In later pregnancies where the baby is also rhesus positive, the levels of these antibodies in the mother’s blood rise rapidly.
	www.tripdatabase.com /spider.html?itemid=260099 (330 words)

	The ABO System
		It is usually sufficient to test for the ABO and Rhesus Factor.
		The inheritance of the Rhesus Factor is straight forward, but the inheritance of the ABO system is a little more complicated and interesting.
		For the Rhesus Factor there is a dominant gene and a recessive gene, so the pattern of inheritance is just like any other factor.
	www.purchon.com /biology/abo.htm (0 words)

	Rhesus Factor - Rh Incompatibility, disorders and conditions
		There are essentially four types of major blood groups in humans - A, B, AB and O. The Rhesus factor is a substance in blood by which human blood may be divided by its presence into (Rh +ve) or (Rh -ve) groups.
		These negative factors may then cross over to the baby through the placenta (afterbirth) and destroy the blood cells of the baby.
		Usually the first pregnancy is spared, as a few months are needed for the negative factors to be built in the mother's body.
	www.whereincity.com /medical/topic/pregnancy/diseases/rhesus-factor-rh-incompatibility-25.htm (547 words)

	What is the Rhesus Factor?
		The Rhesus factor is an antigen, or more specifically a protein, that exists on the surface of red blood cells.
		But each blood type is further labeled as positive or negative which is a reference to the Rhesus factor of the blood.
		The Rhesus factor is less likely to affect the first-born child because the woman's system will have had less time and is therefore less likely to produce the antibodies to fight off the antigens in the child's Rh-positive blood.
	www.wisegeek.com /what-is-the-rhesus-factor.htm (854 words)

	Vanguard - Health: Biofem demystifies rhesus incompatibility
		Rhesus factor in pregnancy was at the front burner of a one -day stakeholders meeting on reproductive health last week with a special focus on Rhesus Iso- Immunization.
		The experts explained that prompt check of Rhesus will prevent the unborn baby from having a blood group which is incompatible with the mother.
		The Rhesus (Rh) Blood group is the most complex of all human groups because the genes differ from other antigens so far recognized on the red cell.
	www.vanguardngr.com /articles/2002/features/health/gh406032007.html (399 words)

	Rh Factors (Site not responding. Last check: )
		Scientists sometimes study Rhesus monkeys to learn more about the human anatomy because there are certain similarities between the two species.
		The presence of the protein, or lack of it, is referred to as the Rh (for Rhesus) factor.
		Or, you might have O- blood which means that you have type O blood with a negative Rh factor.
	www.msu.edu /~terbrack/817Redesign/frames/rhfactor.htm (283 words)

	What is my Rhesus status, and how will it affect my pregnancy?
		People who are Rhesus positive have a protein known as D antigen on the surface of their red blood cells, and they are said to be RhD-positive.
		Rhesus status only matters if an RhD-negative mother is carrying a RhD-positive baby (the child inherits this from a RhD-positive dad).
		If some of your baby's blood gets into your own bloodstream, your immune system may react to the D antigen in the baby's blood as if it were a "foreign invader" and produce antibodies against it.
	www.babycenter.ca /pregnancy/complications/whatisrhesusstatus (1350 words)

	rhesus factor — Infoplease.com
		Rh factor - Rh factor Rh factor, protein substance present in the red blood cells of most people, capable of...
		Vaccine-induced antibody responses as parameters of the influence of endogenous and environmental factors.
		The association between biomarker-based exposure estimates for phthalates and demographic factors in a human reference population.......
	www.infoplease.com /ce6/sci/A0918128.html (219 words)

	Pregnancy and Rhesus Factor \| Irish Health Focus \| Vhi
		The four different blood groups are A, B, AB or O and the Rhesus factor is either Rh-negative or Rh-positive.
		However, in subsequent pregnancies the Rhesus antibodies may go back across the placenta and attack the baby’s blood, destroying red blood cells and causing anaemia, hydrops fetalis (severe fluid and swelling in the tissues) and stillbirth.
		Rhesus incompatibility is not usually a problem in a first pregnancy.
	www.vhi-healthcare.com /hfiles/hf-488.jsp (644 words)

	Rh Factors
		Scientists sometimes study Rhesus monkeys to learn more about the human anatomy because there are certain similarities between the two species.
		The presence of the protein, or lack of it, is referred to as the Rh (for Rhesus) factor.
		Or, you might have O- blood which means that you have type O blood with a negative Rh factor.
	sln.fi.edu /biosci/blood/rh.html (228 words)

	Embryo testing prevents rhesus factor disease. 20/01/2005. ABC News Online
		But Abigail's birth made medical history - she is the first child born through an IVF process that screens for the blood disorder, rhesus factor disease.
		She and her husband had always wanted to have three or four children but after the birth of her second child, who was affected by rhesus factor disease, they were told to leave it at two.
		The usual treatment for women whose blood type is rhesus negative is an injection after the birth of her first child.
	www.abc.net.au /news/newsitems/200501/s1285912.htm (690 words)

	FPA Health: Sex Matters: FAQs: I was reading your pre conception Fact Sheet on your website and saw some information ... (Site not responding. Last check: )
		To prevent this happening, all women who are rhesus negative, are given an injection of a medicine called anti D at the end of their pregnancy.
		This might be given after the birth of a baby or after a miscarriage or termination and is to prevent her body from making the antibodies (fighting cells), that will destroy the blood cells of future pregnancies.
		In the past, when this injection wasn't available, some babies born to rhesus negative women were very sick ('Blue Babies'), so anti D has made a huge difference to the health of women and their babies with a Rhesus negative blood group.
	www.fpahealth.org.au /sex-matters/faq/rhesus_20051026.html (467 words)

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