Abstract:Objective:The relation between immune function and the model of hysteromyoma of rat were studied.Method:Rats were injected with diethyl 1 stilbestrol,and progesterone and diethyl stilbestrol together.The immune organs were observed,levels of CD3,CD4 and CD4/CD8 in serum were measured by flow cytometer;estrogen receptor was analyzed by radioligand combination assay.Result:Compared with normal group,the weight of thymus,the levels of CD3,CD4 and CD4/CD8 of model group injected with diethyl stilbestrol and progesterone was significantly increased.Conclusion:It is suggested that the low immunologic functions in model rats with estrogen and progesterone together was lower,might be related to the levels of estrogen receptor.