BATSILLAHO (Bacillus), yak guruhi kaloni bakteriyahoi qalamchashakl. B. taqr. 217 namud doshta, dar dokhili hujayra spora hosil mekunand. B. bakteriyahoi grammusbat meboshand (yane dar mavridi tadqiq bo usuli Gram rangi musbat paydo mekunand). Asosan dar khok sukunat dorand. Baze B. angezandai kasalihoi odamu hayvonot mahsub meshavand, mas., sukhtani (V. anthracis), zahrsiroyathoi khuroki (V. cereus) va g. B. bakteriyahoi aerobi buda, dar muhiti oksigendor afzoish meyoband.