title: Cytogenetics of ticks (Acari: Ixodoidea). 7. Spermatogenesis in the Pacific Coast tick, dermacentor occidentalis Marx (Ixodidae).
mesh_terms: D000818:Animals; D002875:Chromosomes; D003582:Cytogenetics; D008297:Male; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D012730:Sex Chromosomes; D013091:Spermatogenesis; D013094:Spermatozoa; D013737:Testis / Q000033:anatomy & histology / Q000166:cytology / Q000254:growth & development; D013987:Ticks / Q000033:anatomy & histology* / Q000166:cytology