a specific genetic variant of an organism.
infraspecific morphological variant.
A variant characterised by a specific genotype.
a genetic variant or subtype of a virus or bacterium
a set of individuals of a particular genotype with the capacity to produce more individuals of the same genotype
Yeast which shares a common genetic makeup and specific traits, such as flavoring properties.
a specific genetic variant of a particular organism. Many microorganisms have stronger and weaker strains, drug-sensitive and drug-resistant strains, etc. See also subtype.
A specific biologic version of a microorganism (i.e. bacterium or virus). The identity of a strain is defined by its genetic makeup, or code; changing just one piece of the code produces a new strain.