Both cd2 + and e2 had great effect on the lymphocyte proliferation of blood and head kidney . lymphocyte proliferation were induced in lower concentrations, contrarily, which was refained greatly when in 8.0 m treated in both cd2 + and e2 . when heightening the concentration of ca2 +, lymphocyte proliferation in head kidney increased remarkablely 镉和e_2均能使血液和头肾淋巴细胞的增殖受到影响,镉和e_2在低浓度时能诱导淋巴细胞的增殖,但在8.0m时均抑制淋巴细胞的增殖,提高水中钙离子浓度,草鱼的头肾淋巴细胞的增殖能极为显著地增强。
All results indicated that cd2 + had obvious harm to the enzymes . the endogenous protective system could be induced in refained degree under the press, however, which came to weakening along with the aggravation of cadmium, adding to extrinsic calcium could enhance the activities of sod and atpase properly, so protecting the damage of cadmium to the fish 镉对草鱼酶系统有明显的毒害作用,内源性保护系统的保护作用在受到胁迫后能够在一定限度内被诱导加强,但防御反应随着重金属离子毒害的加重而减弱,提高水中ca~(2+)浓度能够适当增强体内酶的活性,对草鱼的镉毒性危害起保护作用。