An individual is exposed to a pathogen and takes five days to recover. When exposed a year later they
again take five days to recover. Would you suspect that adaptive immunity was involved? What will be an ideal response?
No, in cases where adaptive immunity is involved the recovery to the second exposure would be much
quicker. It is likely that innate immune responses were involved.
You might also like to view...
Because there are so many HLA allele combinations, it is rare to find unrelated individuals with the same HLA halplotypes
a. True b. False Indicate whether the statement is true or false
Dating to about 3.5 million to 3 million years ago, the famous fossil "Lucy," found in northern
Ethiopia, represents a member of which species?
a. Homo habilis b. Homo erectus c. Australopithecus africanus d. Australopithecus afarensis e. Homo neanderthalensis
The term ________ refers to the study of the blood components that fight infection.
A. antisepsis B. chemotherapy C. etiology D. serology E. bioremediation
Why is antibiotic use a common cause of Clostridium difficile infections?
A) The antibiotic wipes out the normal bacteria in the gut, allowing C. difficile to overgrow. B) Antibiotics are perishable drugs that are easily contaminated with C. difficile spores. C) C. difficile requires antibiotics for its own metabolism, and therefore grows best in its presence. D) Antibiotics are usually given to immunocompromised patients ,and their low T cell count is favorable for C. difficile infection.