The molecular weight of the antigen obtained was 15100 dalton as measured with SDS--PAGE By means of isoelectric focusing electrophoresis, it was found to consist of two subunits and their isoelectric points are 5.32 and 5.54 respectively.

• 经SDS-PAGE和等电聚焦电泳测定；该抗原分子量为15；100；至少由两个蛋白值亚基组成；其等电点分别为5.；32和5