A 66-year-old man is undergoing chemotherapy for leukemia has a 3-dau history of progressive fever, headache, nausea, and deterioration of mental activity. Analysis os CSF shows lymphocytic pleocytosis, a normal glucose concentration, and a slightly increased protein concentration. The causal agent is presumptively identified bu a positive India ink test and later confirmed with culture. Which of the following is a major virulence factor of the infecting organism producing this disease?
A) Antigenic variation
B) Exotoxin
C) Immunoglobulin protease
D) Leukicidin
E) Polysaccharide capsule
A) Antigenic variation
B) Exotoxin
C) Immunoglobulin protease
D) Leukicidin
E) Polysaccharide capsule