As a result of artificial selection, a group of microorganisms of the same species

As a result of artificial selection, a group of microorganisms of the same species was obtained, which is called a strain, a breed, a subspecies, a variety.

This group of microorganisms is called a strain. This applies to viruses, bacteria and other microorganisms that belong to different kingdoms. A strain means that in addition to organisms of the same species, this preparation no longer contains. This is necessary to obtain certain properties of bacteria, to isolate their waste products, to study them, and so on. In various industries, strains of lactic acid bacteria or yeast can be removed for the manufacture of certain food products or medicines.