Apoptosis can be induced by physiological, pathological and other factors, and there are initiation phase, effectorphase and degradation phase during the course of its occurrence.
细胞凋亡可被多种生理性、病理性及其它因素所诱发，它的发生过程可分为启始阶段、效应阶段和降解阶段。
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"Histology supports the diagnosis of psoriasis and indicates a role for memory effector t cells in the early phase," the researchers conclude.