Destruction of lymphocytes with self-specificity is called ________.
A. clonal deletion.
B. clonal selection.
C. differentiation.
D. proliferation.
E. hypersensitivity.
Answer: A
Biology & Microbiology
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An individual antibody is made against _______.
A. a whole bacterial cell B. one epitope on the cell C. one antigen on the cell D. all of the combined antigenic determinants on a cell E. the cell's DNA
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Complex traits are usually quantified by ____________________ rather than by ____________________
Fill in the blank(s) with correct word
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Identify the species that is NOT classified as a pteridophyte.
A. Marchantia B. Psilotum C. Equisetum D. Hart's tongue
Biology & Microbiology