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| | Blood |
 | | Eosinophils increase in number during allergic reactions or in response to parasitic infections. |
 | | Agranulocyte are lymphocytes, which have crucial roles in immunity, and monocytes, which differentiate into macrophages. |
 | | Lymphocytes include the B-cells, involved in producing antibodies, and T-cells, which have direct and indirect antigen killing functions. |
| faculty.ccp.edu /dept/biol/110_notes_1.htm (1309 words) |
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