摘要凋落是一种程序性细胞死亡,一种有规律的细胞死亡形式,有别于激发性细胞死亡。程序性细胞死亡的细胞具如下特征:细胞皱缩、染色质凝聚、细胞膜呈典型的外突。在 DNA 水平上,通过 Mg<sup>2+</sup>/Ca<sup>2+</sup>相关的核酸内切酶,裂解为180个碱基对大小的若干片断。在无胞浆成分溢出的情况下。
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