The ends of the colis of the majority of bifidobacteria are forked but can also be refined or thickened in the form of spherical bubbles. The length varies from 0.5-1.3 – 1.5-8.0 μm. In the semi-solid medium, isolated colonies in the form of studs or sticks are formed. On the basis of culture-morphological (growth characteristics and cell morphology) and physiological and biochemical characteristics it is concluded that the isolated cultures belong to the Lactobacillus
and Bifidobacterium genus.