| |
| | Medmicro Chapter 6 (Site not responding. Last check: 2007-10-08) |
 | | Many elements of the normal flora may act as opportunistic pathogens, especially in hosts rendered susceptible by rheumatic heart disease, immunosuppression, radiation therapy, chemotherapy, perforated mucous membranes, etc. The flora of the gingival crevice causes dental caries in about 80 percent of the population. |
 | | The normal microbial flora is relatively stable, with specific genera populating various body regions during particular periods in an individual's life. |
 | | The main factor determining the composition of the normal flora in a body region is the nature of the local environment, which is determined by pH, temperature, redox potential, and oxygen, water, and nutrient levels. |
| gsbs.utmb.edu /microbook/ch006.htm (3069 words) |
|