a group of organisms, microorganisms, or cells distinguished by their shared specific antigens as determined by serologic testing. the set of antigens that characterizes the group. verb (used with object), se·ro·typed, se·ro·typ·ing.

What does the word serotype mean?

: a group of intimately related microorganisms distinguished by a common set of antigens also : the set of antigens characteristic of such a group.

What is the difference between strain and serotype?

Serotypes are different from strains, which have been described as single isolates from pure cultures or simply as distinct isolates of specific phenotypic/genotypic traits (or both). ... * A serotype is also referred to as a serovar. * Organisms with similar antigens are collectively referred to as a serogroup.