Doboszyńska T, Sobotka A
Department of Reproductive Histophysiology, Division of Reproductive Endocrinology and Pathophysiology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, 10-747 Olsztyn, Poland.
Pol J Vet Sci. 2002;5(3):131-7.
The study of corrosion casts after filling the utero-oviductal lumen with heat-hardened resin Mercox, and scanning electron microscopy (SEM) observations of the tissue cross-sections were carried out in 63 pigs during the estrous cycle. Investigations of the corrosion casts showed that the barrier for the transportation through the utero-oviductal canal may occur in the oviductal isthmus, because this pathway was closed for Mercox resin between days 6-21 of the estrous cycle. SEM observations of the oviductal tissues confirmed that the smallest cross-sections of the porcine oviduct were found in the isthmus on 1-1.5 cm from the uterine horn, although with open lumen throughout the estrous cycle. However, in the intermediate parauterine part of the isthmus, with thick muscular layer (2850-3800 microns in a diameter) and with short strongly tighten apical mucous folds, main pathways for the transportation can be parabasal fissures, particularly on days 6-21 of the estrous cycle.
在63头处于发情周期的母猪中，进行了用热固化树脂Mercox填充子宫输卵管腔后的铸型腐蚀研究以及组织横截面的扫描电子显微镜（SEM）观察。铸型腐蚀研究表明，子宫输卵管通道运输的屏障可能出现在输卵管峡部，因为在发情周期的第6至21天，该通道对Mercox树脂是封闭的。输卵管组织的SEM观察证实，猪输卵管最小的横截面位于距子宫角1 - 1.5厘米处的峡部，尽管在整个发情周期管腔都是开放的。然而，在峡部子宫旁中间部分，具有厚的肌肉层（直径2850 - 3800微米）以及短而紧密的顶端黏膜皱襞，主要的运输途径可能是基底旁裂隙，尤其是在发情周期的第6至21天。
