<P> A biovar is a variant prokaryotic strain that differs physiologically and / or biochemically from other strains in a particular species . Morphovars (or morphotypes) are those strains that differ morphologically . Serovars (or serotypes) are those strains that have antigenic properties that differ from other strains . </P>

Morphovars serovars biovars and pathovars are examples of terms that refer to microbial