title: Distribution of zinc in parasitic helminths.
abstract: The distribution of zinc in representative groups of parasitic helminths was determined by the use of the atomic absorption spectrophotometer. The results of these analyses have shown that growing flukes (smaller forms) with active oogenesis and spermatogenesis contained more zinc than old (large) or very old adults with an empty uterus and large lobulated testes. In cestodes, the neck region and immature proglottids showed more zinc concentration than mature and gravid proglottids and fully grown cyst walls. Similarly, the youngest endogenous daughter cysts of Echinococcus granulosus contained more zinc in their walls than those of larger/older forms. Zinc was concentrated more in nematode eggs than in adult females.
authors.affiliation: Punjab Agricultural University, Department of Veterinary Parasitology and Physiology, College of Veterinary Science, India.
authors.forename: N
authors.initials: N
authors.lastname: Chowdhury
authors.forename: R
authors.initials: R
authors.lastname: Singh
mesh_terms: D000818:Animals; D002589:Cestoda / Q000032:analysis / Q000254:growth & development / Q000502:physiology; D005260:Female; D006376:Helminths / Q000032:analysis* / Q000254:growth & development / Q000502:physiology; D008297:Male; D009348:Nematoda / Q000032:analysis / Q000254:growth & development / Q000502:physiology; D009866:Oogenesis; D013054:Spectrophotometry, Atomic; D013091:Spermatogenesis; D014200:Trematoda / Q000032:analysis / Q000254:growth & development / Q000502:physiology; D015032:Zinc / Q000032:analysis* / Q000502:physiology
chemical_list: D015032:Zinc