细胞凋亡是细胞死亡的形式之一。它的启动和发展需要多种基因及其产物的参与。终末蛋白（ｔｅｒｍｉｎｉｎｐｒｏｔｅｉｎ，Ｔｐ）是一种新发现的细胞质蛋白，有三种分子形式：Ｔｐ９０、Ｔｐ６０和Ｔｐ３０，分别存在于增殖细胞、衰老细胞和凋亡细胞。Ｔｐ３０的存在，标志着细胞凋亡关键时刻的降临。 Apoptosis is one of the forms of cell death. Its initiation and development require the participation of multiple genes and their products. Terminator protein (Tp) is a newly discovered cytoplasmic protein that has three molecular forms: Tp90, Tp60 and Tp30, which are found in proliferating cells, senescent cells and apoptotic cells respectively. The presence of Tp30 marks a critical moment of apoptosis.