Mycobacterium bovis BCG

Structure and Physiology

This bacterium is a rod shaped, slow growing, aerobic bacterium. As this microbe is acid-fast, staining is done using the Ziehl-Neelson stain rather than gram staining. 

Bordetella pertussis

Structure and Physiology

This bacterium is a Gram-negative, non-motile, coccobacillus aerobe.

Streptococcus pyogenes

Structure and Physiology