what are the 3 branches of microbiology?
['Bacteriology: the study of bacteria.', 'Immunology: the study of the immune system. ... ', 'Mycology: the study of fungi, such as yeasts and molds.', 'Nematology: the study of nematodes (roundworms).', 'Parasitology: the study of parasites. ... ', 'Phycology: the study of algae.']