The microanatomy of the intestinal epithelium in the Chinese soft-shelled turtle (CST) was studied by light and transmission electron microscopy (TEM). The small intestinal epithelium (SIE) was single layered or pseudostratified. The enterocytes contained mitochondria or mitochondria and lipid droplets. The enterocytes were arranged tightly in the apical parts of epithelium and connected by des...

Background: Infertility problem affects young couples. One of the known causes of spermatogenic disorder is chemotherapy in patients with cancer. Since dividing cells are mainly affected by anticancer drugs, the aim of the present study is to investigate the preventive effect of GnRH on spermatogenic defect produced by anticancer drug. Materials and Methods: In the present study 30 adult female...

The present study investigates the anti-spermatogenic potential of ethanolic extract of Matricaria recutita a plant belonging to Asteraceae family. The effects of an ethanolic extract of the Matricaria recutita on spermatogenesis, histology of testis and level of testosterone were examined in control and experimental groups. Results showed that Matricaria recutita extract did not cause any chan...

Spermatogenesis, the process that leads the production of male gametes, consists in the progression of mitotic spermatogonia toward meiosis and spermiogenesis in order to produce functional spermatozoa. This complex process requires a deep network among a wide set of endocrine, paracrine and autocrine factors exerting their activity at different levels along the hypothalamus-pituitary-gonad (HP...

The circular band of lymphoid tissue within the pharynx consisting of the adenoids, the palatine tonsils (Figure 1), and lingual tonsils is known as Waldeyer’s ring. The palatine tonsils are lymphoid tissue with prominent germinal centers and the palatine tonsils, in contrast to the lingual tonsils and adenoids, have a distinct capsule1which separates the tonsils from the lateral pharyngeal wal...

1. The incidence of colchicine-induced lesions in the germinal epithelium oof the rat duodenum was studied in young rats in an early stage of zinc deficiency and in their pair-fed controls. At both dose levels of colchicine used, a marked increase in the amount of cell damage was observed in the duodenum of Zn-deficient rats as compared with the pair-fed, control (Zn-supplemented) rats. 2. No s...

The neuroepithelium is a germinal epithelium containing progenitor cells that produce almost all of the central nervous system cells, including the ependyma. The neuroepithelium and ependyma constitute barriers containing polarized cells covering the embryonic or mature brain ventricles, respectively; therefore, they separate the cerebrospinal fluid that fills cavities from the developing or ma...

The morphology of ascidian gonad is very similar among species. The testis consists of variable number of testicular follicles; the ovary consists of ovarian tubes that are thickened forming the germinal epithelium with stem cells for female germ cells with the exception of botryllid ascidians. Peculiar accessory cells that would be germline in origin accompany the oocytes. Using vasa homologue...

INTRODUCTION It is widely accepted that oogenesis normally stops early in mammalian development (see Brambell, 1956; Franchi, Mandl & Zuckerman, 1962). Nevertheless, it has been claimed that mitotically active oogonia, and oocytes in early stages of meiotic prophase occur in mature specimens of Galago senegalensis (Gerard, 1920, 1932; Gerard & Herlant, 1953; Herlant, 1961; Petter-Rousseaux, 196...

The article contains raw and analyzed data related to the research article "Neuronal ceroid lipofuscinosis genes, CLN2, CLN3, CLN5 are spatially and temporally co-expressed in a developing mouse brain" (Fabritius et al., 2014) [1]. The processed data gives an understanding of the development of the cell types that are mostly affected by defective function of CLN proteins, timing of expression o...