However, the molar ratio of OTC to BSA in artificial antigen was 4.00:1 (using EDC as adjunt) and 2.85:1 (GA as adjunt) respectively. This means EDC is better adjunct than GA in preparation for OTC-BSA.

• 结果表明；以EDC或GA为偶联剂；均可得到OTC与BSA的偶联物；但是偶联物中OTC与BSA的摩尔比有很大的差异；以EDC为偶联剂时OTC:BSA摩尔比为4.；00:1；而以GA作为偶联剂时仅为2