In vivo, the embryonic chick corneal epithelium lays down a stroma of collagen and proteoglycans whose fibrils are unusual as their diameter distribution peaks sharply about a mean of 20 nm. Such epithelia cultured on Nuclepore filters will also lay down a stroma containing 20 nm diameter fibrils, although there is only limited orthogonal organisation. We report here that collagen fibril morpho...

Histological studies were conducted on the tonsil of soft palate in six month-old male crossbred goats. The tonsil was located on the nasopharyngeal side of the soft palate. The tonsillar surface epithelium presented small folds and was lined by pseudostratified ciliated columnar epithelium in the rostral half and stratified squamous epithelium in the caudal part. The epithelium mounting over t...

In the present study, the lenses and ciliary bodies of 20 ostrich eyes were studied macroscopically and microscopically. The histological slides were studied after staining by hematoxylin and eosin, Verhoeff, Van Gieson, and periodic acid-Schiff (PAS). Posterior surface of lens was more convex than its anterior surface. The average lens diameter and thickness were respectively measured as 1.43 ...

Introduction: Fibroepithelial stromal polyp (FESP) of the female lower genital tract is a rare benign lesion characterized by polypoid proliferation of stroma, covered by a benign squamous epithelium in the vulvovaginal region. These hormone-sensitive lesions usually occur in young to middle-aged women. The lesions are typically no larger than 5 cm in diameter and are found randomly during rout...

morphological and histochemical study of the abomasal epithelium in camel (camelus dromedarius) wascarried out by light and scanning electron microscopes. the lining of the abomasum was divided into fourregions, i.e. cardiac, pseudocardiac, fundic and pyloric. our investigation revealed that the cardiac andpseudocardiac regions occupy a wide part of the abomasum in camel and it reaches approxim...

Objective Cyclophosphamide (CP) is a chemotherapy drug which causes deleterious effects on testicular tissue and increases free radicals in the body. The aim of this study is to investigate the protective effects of ethyl pyruvate (EP) on testicular improvement in CP treated animals. MaterialsAndMethods In this experimental study, 15 male mice (6-8 weeks) were divided into 3 groups. The control...

background: previous researches about the effects of epididymal obstruction on the testes are contradictory, and the mechanism harmful effect of male duct system obstruction on seminiferous tubules still remains unclear. objective: the aim of this study was to investigate the effects of epididymal obstruction in prepubertal rats on the testis. materials and methods: 15 days of age, the young ra...

Shrimp aquaculture has a short history in I.R Iran. Farmed shrimp production grew slowly from 1992 until 2000 when a number of large farms started to produce. In 2000, the total production was about 4,500 MT and it was estimated that more than 7,000 MT would be produce by the year 2001. From August 1997 to March 1998, two thousand samples of cultured Penaeus semisulcatus postlarvae and subadult...

objective(s) in recent years concerns have been raised regarding the incidence of male reproductive disorders from exposure to endocrine disruptors. so, chronic effects of di(2-ethylhexyl)phthalate were studied on histological and stereological structure of testis in adult wistar rats. materials and methods thirty two adult wistar rats were randomly divided in four equal experiment groups; oil ...