Traditional Culture Encyclopedia - Traditional culture - The following statements about antibodies are correct: (a) The chemical essence of antibodies is mainly protein, and a few are RNAB. Plasma cells and memory cells.
The following statements about antibodies are correct: (a) The chemical essence of antibodies is mainly protein, and a few are RNAB. Plasma cells and memory cells.
A, the chemical essence of antibody is protein, A is wrong;
B, only plasma cells can secrete antibodies, B is wrong;
C, the antibody can only act on the antigen outside the cell, not on the antigen inside the cell, and C is wrong;
D, human antibodies are mainly distributed in serum, tissue fluid and exocrine fluid, and D is correct.
Therefore, choose: d.
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