同时设立生理盐水血清作为阴性对照。
Meanwhile, the serum contained normal saline was set as negative control.
对48例血清HCV-RNA阳性和35例HCV-RNA阴性的慢性丙型肝炎（慢丙肝）患者外周血T淋巴细胞亚群进行观察，并与20例正常人对照。
Peripheral T-lymphocyte subsets of 48 HCV-RNA seropositive and 35 HCV-RNA seronegative chronic hepatitis -C patients were investigated arid 20 normal subjects were kept as control.
以确定的最适条件对血吸虫病牛、阴性对照牛和肝片形吸虫病牛的血清进行检测并和环卵沉淀试验(COPT)检测结果进行比较。
Methods The sera of schistosomiasis cattle, negative control cattle and fascioliasis cattle were detected with DDIA and compared with COPT.
结果：30例CIU患者自体血清皮肤试验阳性率为30%（9/30），而对照组全部阴性。
Results:The results showed that ASST was positive in9out of30CIU cases and positive rate was30%, but all negative in controls.
健康兔血清作阴性血清对照。
The blood of a healthy rabbit was taken as negative control serum.
对照组30份抗体阴性的孕妇血清及其围产儿的脐血检测结果抗体皆为阴性。
In control 30 cases of mothers were negative of toxoplasma antibody and so were their newborns navel cord blood.
对照组30份抗体阴性的孕妇血清及其围产儿的脐血检测结果抗体皆为阴性。
In control 30 cases of mothers were negative of toxoplasma antibody and so were their newborns navel cord blood.
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