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1题目人体受到某种抗原刺激后会产生记忆细胞,当其受到同种抗原的第二次刺激后()A.记忆细胞的细胞周期持续时间变短,机体抗体浓度增加B.记忆细胞的细胞周期持续时间变长,机体抗体浓度增加
1 Subject Human body is stimulated by a certain antigen will produce memory cells, when it is subjected to the second stimulation of alloantigen () A. Memory cells of the cell cycle duration is shorter, the body’s antibody concentration increased B. Memory cells The duration of the cycle becomes longer and the body’s antibody concentration increases