The Gram-positive cocci are grouped together based on their Gram-stain reaction, thick cell wall composition, and spherical shape. Most of the organisms in these groups are members of the Micrococcaceae family. All of the organisms in these groups are non-endospore forming chemosynthetic heterotrophs. We will discuss only the clinically relevent bacteria from Micrococcus and Staphylococcus of the Micrococcaceae family. Streptococcus and Enterococcus(formerly a species of Streptococcus) are discussed as well. The chart below shows the paths to identification of the genera discussed.
