Corynebacterium diphtheria is: (A) Gram-positive cocci, (B) Gram-positive bacilli, (C) Gram-negative cocci, (D) Gram-negative bacilli
Answer is B. Ref: Harrisons 19th ed. pg. 978* C. diphtheriae is a Gram-positive bacillus that is unencapsulated, nonmotile, and nonsporulating.* The bacteria have a characteristic club-shaped bacillary appearance and typically form clusters of parallel rays, or palisades, that are referred to as "Chinese characters"