Good antigen

Good an·ti·gen

see low frequency blood groups in Blood Groups Appendix.
References in periodicals archive ?
Therefore, the 64 kDa polypeptide detected in this experiment may correspond to an antigen that share epitopes with proteins from other trypanosomes, such as T evansi, which means that this protein may be a good antigen for diagnosing infections either with T evansi or with T vivax.
We found that all but one of the patients developed a strong anti-telomerase immune response, suggesting that telomerase is a surprisingly good antigen using this approach.