title: [Effect of calcium cyanamid synthetic drug on Schistosoma japonicum egg morphology].
abstract: OBJECTIVE
  To study the morphological change of Schistosoma japonicum eggs processed by calcium cyanamide synthetic drug, so as to provide the basis for further study of the mechanism that calcium cyanamide synthetic drug to schistosome eggs.
  
  
  METHODS
  The calcium cyanamide synthetic drug was added to the cattle feces containing schistosome eggs and mixed up, and then the cattle feces was stacked as original shape on the marshland. Blank controls were set at the same time. The cattle feces samples were collected and.the schistosome eggs were observed under a microscope on the 1st, 2nd, 3rd, 7th day after the experiment.
  
  
  RESULTS
  By the effect of calcium cyanamide synthetic drug, the color of eggs was deepening gradually, the miracidia were atrophied, and the shells of eggs were thickened. The embryonic membrane of miracidia was no longer completed 3 days later, and the miracidia were deformed severely 7 days later. The atrophy of miracidia was not obvious in the blank controls.
  
  
  CONCLUSIONS
  The schistosome miracidia and embryonic membrane can be damaged by the calcium cyanamide synthetic drug, and worse damaged with time extending.
authors.forename: Yi-sheng
authors.initials: YS
authors.lastname: Zhou
authors.forename: Guo-hua
authors.initials: GH
authors.lastname: Peng
authors.forename: Zhu-hua
authors.initials: ZH
authors.lastname: Hu
authors.forename: Xiao-wu
authors.initials: XW
authors.lastname: Feng
authors.forename: Rong
authors.initials: R
authors.lastname: Zhu
authors.forename: Wang-yuan
authors.initials: WY
authors.lastname: Wei
authors.forename: Jia-gang
authors.initials: JG
authors.lastname: Guo
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D003484:Cyanamide / Q000138:chemical synthesis / Q000494:pharmacology*; D005243:Feces; D005260:Female; D008297:Male; D010063:Ovum / Q000187:drug effects / Q000254:growth & development*; D012549:Schistosoma japonicum / Q000187:drug effects* / Q000254:growth & development; D012554:Schistosomiasis japonica / Q000469:parasitology / Q000662:veterinary*; D012556:Schistosomicides / Q000138:chemical synthesis / Q000494:pharmacology*
chemical_list: D012556:Schistosomicides; D003484:Cyanamide