By modeling the form of water between sand particles in wet sand bed, the correlation among agglutinate stress, water content and sand diameter is set up. Accordingly, a discriminant of threshold condition of sand movement on wet sand bed is sought out.
野花生豆(Crotalaria mucronata)经磨粉、浸取、硫酸铵分级沉淀、猪胃粘蛋白-Sepharose 4B亲和层析、Sephacryl S-200HR分子筛层析可得到一表观分子量为103KD且对A型血红细胞专一凝集的野花生豆凝集素(Crotalaria mucronata Lectin，CML)。
Crotalaria mucronata lectin (CML) was purified from seeds of Crotalaria mucronata by extraction,fraction with (NHi) 2864,hog gastric mucin-Sepharose 4B affinity chromatography and followed by gel filtration of Sephacryl S-200 HR. CML agglutinated type A human red blood cells specially.
菜豆凝集素 (PHA) 是一种能使动物红细胞凝集的蛋白质，是菜豆引起食物中毒主要的致毒物。
The hemagglutinin in kidney bean (PHA) is one kind of protein which can agglutinate animal's erythrocyte.