Pathogenic cryptococci differ from non pathogenic strains by all of the following criteria except: (A) Grow at 37 o C, (B) Produces urease, (C) Pathogenic for mice, (D) Ferments carbohydrates
Answer is D. Differentiation of pathogenic Cryptococcus from other non-pathogenic cryptococci is they grow at 37C, hydrolyse urea, produced brown colonies on niger seed agar and produce disease in mice. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition