精选优质文档-倾情为你奉上【名解】Immunity: refers to all mechanisms used by the body as protection against environmental substances that are foreign to the body.(to recognize and eliminate foreign substances)【名解】Lymphocyte homing: the migration of lymphocytes from central immune organ to peripheral immune organ【名解】Lymphocyte recirulation：lymphocyte cirulation between blood lymph other tissues【名解】Antigen: the substances that are recognized by TCR/BCR or antibody and induce a specific immune respons
