A) changes in brain chemistry and behavior caused by the gut microbiota B) neurons in the spinal cord that connect the gut and the brain C) pores in the blood-brain barrier that permit the passage of glucose and other nutrients D) the location of dormant viruses that infect both the gut and the brain
The concept of "immune privilege" explains why the central nervous system has _______.
A) a completely different set of immune responses B) a greater immune response than the rest of the body C) a reduced immune response compared to the rest of the body D) more MHC markers than other tissues
Which of the following is not true of Streptococcus pneumoniae?
A) It has a polysaccharide capsule that resists phagocytosis. B) It is the most frequent cause of community-acquired meningitis. C) It is a small, gram-negative coccus. D) It produces an alpha-hemolysin and hydrogen peroxide.