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目前建议使用接触作用的新杀螨剂——灭螨醚,杀灭棉花上的红蜘蛛。灭螨醚(HK-592)是淡黄色无臭结晶。活性物质3-正丙硫基-4-甲基苯基-4’-硝基苯基醚是低毒物。大鼠经口摄入LD_(50)为1,130 mg/kg。作者研究了灭螨醚对实验动物免疫反应的作用。研究了免疫的非特异和特异因素。非特异性细胞免疫指标为中性白细胞的吞噬活性和杀菌力。非特异体液因素定为补体和溶菌酶滴度。特异性细胞因素定为脾脏内抗体形成细胞数,而特异性体液因素用细胞凝集素的滴度。实验研究用150只大鼠,分3组。灭
It is currently recommended to use the contact of the new acaricide mite - mite ether, kill spider mites on cotton. Fenfen (HK-592) is light yellow odorless crystals. The active substance 3-n-propylthio-4-methylphenyl-4’-nitrophenyl ether is a low poison. Rats were orally ingested LD_ (50) of 1,130 mg / kg. The authors studied the role of fenretinin in immune responses in experimental animals. Non-specific and specific factors of immunity were studied. Non-specific indicators of cellular immune neutrophil phagocytic activity and bactericidal power. Non-specific humoral factors as the complement and lysozyme titer. The specific cytokine is defined as the number of antibody-forming cells in the spleen, while the specific humoral factor is titer of the cytokinin. Experimental study with 150 rats, divided into 3 groups. Off