In the first few minutes after host cell infection, the virus undergoes an eclipse
Indicate whether the statement is true or false.
Answer: TRUE
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Effector helper T cells release cytokines only
when which of the following occur?
a. The effector helper T cell binds to an antigen-presenting dendritic cell. b. The effector helper T cell binds to a memory T cell. c. The effector helper T cell binds to a complement protein. d. The effector helper T cell binds to MHCantigen complexes on B cells. e. Any of these can stimulate cytokine production.
The most important defense of the cardiovascular system against infection is ________.
A. fever B. lymphocytes in the blood C. lymph nodes D. the blood-brain barrier
A common medium used for growing fastidious bacteria is
A. MacConkey medium. B. mannitol salt agar. C. chocolate agar. D. a reducing medium. E. trypticase soy agar.
Haemophilus capsule polysaccharide plus diphtheria toxoid is a(n)
A) inactivated whole-agent vaccine. B) attenuated whole-agent vaccine. C) conjugated vaccine. D) subunit vaccine. E) toxoid vaccine.