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Microorganisms 

Microorganisms

Chapter:
Plurals
Author(s):

Brenda Gregoline

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Microorganisms

When referring to the common vernacular plural of a genus, use roman lowercase letters. Consult the latest edition of Dorland's or Stedman's medical dictionary. For organisms that do not have a common plural, add the word species or organisms to the genus name to indicate a plural use (see also 15.14, Nomenclature, Organisms and Pathogens).

Genus

Plural Noun Form

Chlamydia

chlamydiae

Escherichia

Escherichia organisms

Mycobacterium

mycobacteria

Proteus

Proteus species

Pseudomonas

pseudomonads

Salmonella

salmonellae

Staphylococcus

staphylococci

Streptococcus

streptococci

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