How does her body produce antibody against C. tetani?
A. Every B cell in her body produces
antibodies against C. tetani.
B. Every cell in her immune system produces
antibodies against C. tetani.
C. The B cell with appropriate antibody is
stimulated to divide, producing plasma cells
that make antibodies to C. tetani, and
memory cells that "remember" C. tetani.
D. The B cell that produces the appropriate
antibody undergoes genomic rearrangement
in order to produce other cells that produce
the same antibody.
C
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The primary function of erythrocytes is to participate in immune reactions
Indicate whether the statement is true or false.
The transferring of an organ from one species
to another is called
a. xenotransplantation. b. transorganization. c. illegal. d. genomics. e. cloning
The geologic time scale is often subdivided on the basis of ____
a. the appearance of different radioactive isotopes in different strata b. levels of background extinction c. periods of mass extinction d. the appearance of new species e. climate change
Scientists can fill in gaps in defining species by DNA sequence analysis.
a. true b. false