They found that 18 patients (23.7%) were seropositive for HCV antibodies. 他们发现18个病患(23.;7%25)为HCV抗体血清阳性；
The patients were seropositive for autoantibodies against cyclic citrullinated peptide (CCP). 患者循环血液中抗瓜氨酸多肽的自身抗体(CCP)的血清学反应呈阳性。
If the blood contains these antibodies,one is said to be seropositive,that is,one is infected and is presumably capable of transmitting the virus to other people. 如果一个人的血液中包含有这些抗体，这个人就被称作血清呈阳性者，这就是说，他受到了感染，而且由此可以认为他能够将病毒传染给他人。
None of the study subjects was seropositive against three types of dengue virus being examined. 无任一位受试者对第一、第二或第三型登革热病毒的血清中和抗体效价达到阳性标准。
Of 8 seropositive ewes, 7 ewes originated from flock No. 3 and another one was from flock No. 在8只血清学阳性母羊中，7只来自第3群而另1只来自第5群。
Seropositive autoimmune antibodies were detected in 53 serum sample (PBC 85.29%; AIH 78.95%). PBC中血循环自身免疫抗体阳性率85.;29%25，AIH 78
