Jenner's successful use of cowpox virus as a vaccine against the smallpox virus was due to the fact that _____
A) the immune system responds nonspecifically to antigens
B) the cowpox virus made antibodies in response to the presence of smallpox
C) there are some epitopes (antigenic determinants) common to both pox viruses
D) cowpox and smallpox are caused by the same virus
C
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A former basketball player complains of significant right knee pain. After examination, it is determined that he needs
a knee replacement. The most likely cause of his issue is ____. a. osteoarthritis b. vitamin D deficiency c. growth hormone deficiency d. rheumatoid arthritis e. osteoporosis
Antibiotic therapy very early in life can
a. cause a predisposition for IBD. b. cause a predisposition for allergies. c. cause increased weight gain. d. all of the above
Typically, the rate of ____________ exceeds the rate of ____________ , resulting in the net formation of tissue fluid.
Fill in the blank(s) with the appropriate word(s).
The axon branches of a typical neuron terminate at structures called
A) synapses. B) boutons. C) glia. D) nodes of Ranvier. E) myelin sheath.