title: Accumulation of eosinophils in the infundibulum of the bovine oviduct just after ovulation.
abstract: This study was to investigate the localization and distribution of eosinophils (EOS) in the bovine oviduct throughout the estrous cycle. Histological studies revealed more abundant EOS in the infundibula of the oviducts ipsilateral to the preovulatory dominant follicle and the ovulated ovary. The number of EOS was higher in the infundibula of the oviducts ipsilateral to the ovulated ovary than those of the oviducts contralateral to the ovulated ovary. The infundibula of the oviducts ipsilateral to the preovulatory dominant follicle had higher number of EOS than those of the oviducts ipsilateral to the mid-cycle corpus luteum. The number of EOS in the isthmus, but not in the ampulla, was higher in the outer layers (tunica muscularis and tunica serosa) than in the inner layers (tunica mucosa and tunica submucosa) during the estrous cycle. Thus, the EOS number varied with the region of the bovine oviduct, with greater number in the infundibula of the oviduct ipsilateral to the ovulated ovary, suggesting the impact of ovulation.
authors.affiliation: Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan.
authors.forename: Rasoul
authors.initials: R
authors.lastname: Kowsar
authors.forename: Sineenard
authors.initials: S
authors.lastname: Jiemtaweeboon
authors.forename: Koumei
authors.initials: K
authors.lastname: Shirasuna
authors.forename: Takashi
authors.initials: T
authors.lastname: Shimizu
authors.forename: Motoki
authors.initials: M
authors.lastname: Sasaki
authors.forename: Nobuo
authors.initials: N
authors.lastname: Kitamura
authors.forename: Akio
authors.initials: A
authors.lastname: Miyamoto
mesh_terms: D000818:Animals; D002417:Cattle / Q000502:physiology*; D004804:Eosinophils / Q000166:cytology / Q000502:physiology*; D030762:Estrous Cycle / Q000502:physiology*; D005260:Female; D007958:Leukocyte Count / Q000662:veterinary; D010057:Oviducts / Q000166:cytology / Q000502:physiology*; D010060:Ovulation / Q000502:physiology*