摘要： The cytogenic effeet of three drugs,cyclophosphamide,dikushuang and sodium nitrite,on thechromosomes of C.pipiens jatigans,was studied by chromosomal aberration test.The results showedthat all of the three drugs induced chromosomal aberrations of C.pipiens fatigans,their inductivecapacities being as follows:cylophosphamide,dikushuang and sodium nitrite.The main chromosomal