Nocardia is differentiated from Actinomyces by:: (A) Gram stain, (B) ZN stain, (C) Nocardia causes mycetoma, Actinomyces do not, (D) Nocardia is facultative anaerobe
Answer is B. Ans. is 'b' i.e., Ziehl Neelsen stainRef: (Ananthanarayan, 8th/e, p. 393; 9th/e, p. 394; Harrison, 18th/e, p. 1324; Jawetz, 24th/e, p. 182)Nocardia - Partially acid fast, obligate aerobe, habitat is soil and infections occur exogenously.Actinomyces - Nonacid fast, facultative anaerobe, habitat is oral flora so infections occur endogenously.