一、~(51)Cr LAI法:用国产~(51)Cr(13～20毫居里/毫升)标记接种过S180肉瘤的昆明杂种小鼠的白细胞以进行LAI。用通常剂量40微居里的~(51)Cr标记的白细胞5×10~4进行试验,不能鉴别粘附细胞的多少。改用200微居里的~(51)Cr与10~7～10~8(在0.2毫升内)细胞温育37℃30分钟,洗涤后每管用2×10~6/毫升0.05毫升(即1×10~6)细胞作LAI,则可从放射计数判断细胞数目的多少。用此方法测定接 A ~ (51) Cr LAI method: Leukocytes of Kunming hybrid mice inoculated with S180 sarcoma were labeled with ~ (51) Cr (13 ~ 20 mCi / ml) for LAI. With the usual dose of 40 microcuries of ~ (51) Cr-labeled leukocytes 5 × 10 ~ 4 test, can not identify how much adherent cells. (200) CrCl was incubated with 10-7 to 10-8 (within 0.2 ml) cells for 30 minutes at 200C, washed with 2 x 10-6 / ml of 0.05 ml (1 × 10 ~ 6) cells for LAI, you can determine the number of cells from the radioactivity count. Use this method to determine the connection