B cells are a specific type of white blood cell called a lymphocyte. Other types of lymphocytes include T cells and natural killer cells. B cells develop from stem cells in bone marrow. They remain in the bone marrow until they become mature.
Infantile behavior is something the masses are taught to exemplify since childhood. As adults they (mostly Betas) are encouraged to have sexual relations with multiple partners.
Cholera Infantum (or summer diarrhea of infants) was a major cause of infant death in the late 1800s. The term cholera described the symptoms that the infant experience. Cholera Infantum is distinct from the epidemic Cholera described above.