Active natural immunity occurs when
A) antibodies pass from a pregnant mother to her fetus
B) antibodies are injected to a host
C) an individual develops a disease
D) a person is vaccinated
E) antibodies are passed in breast milk
Cells that process antigen and present these antigens to other immune cells are called
A) plasma cells
B) antigen-presenting cells
C) B receptor cells
D) T suppressor cells
E) antibodies
2007-03-21
03:33:44
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1 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Biology