It is indicated that chimozine is relative to the forming of peritrophic membrane (PMb) and the den-sity of PMb determined whether Nosema Apis Zander can inject in the ventriculus epithelium.

中肠酪素酶与中肠围食形成有关，而围食密度又决定了微孢子虫能否侵中肠上皮细胞。

The development and application of organosilicone modifying acrylic resin,polyurthane,nitrocotton and casein etc. in leather chemical materials at home and abroad are introduced.

介绍了国内外有机硅改性丙烯酸树脂、有机硅改性聚氨酯、有机硅改性硝化棉、有机硅改性酪素等在皮化材料中发展及应用情况。