Normal Microbial Flora of the Oral Cavity
The oral cavity is one of a complex, heterogeneous microbial habitat. Saliva contains microbial nutrients, but it is not an especially good growth medium because...
Purple Phototrophic Bacteria
These bacteria carry out an-oxygenic photosynthesis. Thus, unlike the cyanobacteria oxygen is not released by these groups. These bacteria are a morphologically diverse group and...