B. = Bifidobacterium
Bifidobacteria are one of the major of bacteria that make up the gastrointestinal tract
L. = Lactobacillus
Mostly found in areas such as the digestive system, urinary system and genital system
S. = Streptococcus
Among the most abundant in our microbiomes, and they are the predominant microbes in our mouths and throats
CFU = Colony Forming Unit