人体的免疫功能，可清除自身的损伤细胞，在这一生理过程中，损伤细胞属于（）。
- A.病原体
- B.抗原性物质
- C.抗体
- D.自身物质
正确答案及解析
正确答案
解析
病原体是指引起传染病的微生物和寄生虫的统称，微生物占绝大多数，包括病毒、衣原体、立克次氏体、支原体、细菌、螺旋体和真菌等；抗原是引起淋巴细胞产生抗体的物质，抗原包括进入人体的微生物等病原体、异物、异体器官等。抗体是指病原体侵入人体后，刺激淋巴细胞产生一种抵抗该病原体的特殊蛋白质，可与相应抗原发生特异性结合的免疫球蛋白。衰老细胞相当于抗原，会引起免疫反应，人体的免疫系统，会识别出衰老细胞，从而能及时清除自身的衰老细胞，维持自身环境的稳定，该过程中损伤细胞属于抗原性物质，B正确。
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