title: Synaptonemal complexes as indicators of induced structural change in chromosomes after irradiation of spermatogonia.
abstract: The incidence of multivalent formation has been compared in primary spermatocytes at pachytene, using synaptonemal complex preparations and at diakinesis/metaphase, using air-dried preparations, from testes of Syrian hamsters several weeks after exposure to an acute dose of X-rays. The pachytene preparations revealed nearly twice the number of multivalents found at diakinesis/metaphase I, and showed the ability to reveal types of structural alteration undetectable in conventional air-dried techniques.
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000528:radiation effects*; D008297:Male; D008540:Meiosis / Q000528:radiation effects*; D051379:Mice; D013090:Spermatocytes / Q000528:radiation effects; D013093:Spermatogonia / Q000528:radiation effects*; D013094:Spermatozoa / Q000528:radiation effects*; D014965:X-Rays