STUDY ON TUMOR INFILTHATING LYMPHOCYTES BY IMMUNOHISTOCHEMICAL TECHNIQUE
Employing immunohistochemical technique (PAP method), we studied the expressions of CD3, CD4, CD8, CD25 arid HLA - DR antigens on tumor infiltrating lymphocytes (TIL) and the distribution of TIL from 26 different malignant tumor patients in situ. The results showed that: (1) The most of TIL was CD4+ cell and CD4+ cells were much less than CD8+ ones. The CD4+/CD8+ ratio in tumor interstitium was much higher than that in parenchyma . There were TILs bearing CD25 or HLA - DR antigens in both parenchyma and interstitium in tumor tissue. (2) Lymphocytes infiltating into tumor were mainly located in interstitium and rarely in parenchyma in most tumors, but ' TILs in renal cell carcinoma (RCC) were distributed scatteredly in tumor tissues just as in interstitium in other tumors due to RCC s lack of typical cancer nest. Through our study we can conclude that: Most TILs are T lympho cytes, and the cell formation of TIL in all tumors are similar to each other; The distribution of TILs in most tumors follow the same rule, but TIL in RCC is an exception.
【CateGory Index】： R730.4