Some tumor cells (e. g., t lymphoma EL4 cells) express CD47 and block phagocytosis of phagocytes in order to escape from the surveillance of immune system.

一些肿瘤细胞譬如T细胞淋巴瘤el 4细胞等也表达CD 47分子，抑制机体吞噬细胞功能逃逸免疫系统的免疫监视。

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T-11. V. 1. No one can escape from illusions unless he looks at them, for not looking is the way they are protected.

一个人除非肯正视种种幻觉，否则就难以摆脱它的控制；因为不愿面对，正是对幻觉的一种保护。

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T-11. V. 1. No one can escape from illusions unless he looks at them, for not looking is the way they are protected.

一个人除非肯正视种种幻觉，否则就难以摆脱它的控制；因为不愿面对，正是对幻觉的一种保护。

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