Which of the following is involved in B cell selection and tolerance?
A) clonal anergy
B) clonal deletion
C) clonal anergy and deletion
D) allelic exclusion
Answer: C
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Indicate whether this statement is TRUE or FALSE.
The energy source for the process of photosynthesis is
A. carbon dioxide. B. sunlight. C. oxygen. D. chlorophyll. E. glucose.
Dead Bordetella pertussis can be used in a(n)
A) inactivated whole-agent vaccine. B) attenuated whole-agent vaccine. C) conjugated vaccine. D) subunit vaccine. E) toxoid vaccine.
The size and shape of a colony is not useful for identification of a microorganism because most microorganisms produce colonies that are indistinguishable from one another.
Answer the following statement true (T) or false (F)