Objective To investigate the expression of iNOS in uterus of antisperm antibody rats treated by NeiZhang pill.Methods Maturate femal wistar rats were randomly divided into 6 groups:NeiZhang pill low dose group;NeiZhang pill high dose group;Liuweidihuang pill control group;Prednisone control group;model group;normal group.Therapy began after the first immune and the expression of iNOS was measured after 3 weeks' therapy.Results NeiZhang pill could promote the expression of iNOS in uterus and enhance the feti...