作者以大豆中分离纯化的大豆凝集素(Soybean agglutinin,SBA)为材料,用放射受体测定法测定细胞表面膜上的SBA受体,数据用Seatchard作图,同样证明正常小鼠肝细胞为一直线,而HepA细胞为一凹面向上的双曲线。经加热和稀释试验,初步排除此双曲线是由负协同效应所致的可能性,证明Hep A细胞表面有两类SBA受体,一 The authors isolated and purified soybean agglutinin (SBA) from soybeans, and measured the SBA receptors on the cell surface membrane by radioreceptor assay. The data was mapped by Seatchard. It also proved that the normal mouse liver cells were always The line, while the HepA cell is a concave upward-facing hyperbola. The heating and dilution tests preliminarily ruled out the possibility that this hyperbola was caused by a negative synergistic effect, demonstrating that there are two types of SBA receptors on the surface of Hep A cells.