Just prior to the emergence of the tooth into the oral cavity, a small circular crater forms in the gingival epithelium immediately above the crown. The craters appear to expand in diameter during eruption to accommodate the emerging crown of the tooth. The observations support the concept that the crown of the tooth does not actively push through and rupture the gingival epithelium, but rather...

Background and objectives: Although anabolic androgenic steroids (AAS) use has become became more prominent in bodybuilders and professional athletes, their consumption is nowadays a problem that involves a wider population. Methandienone or dianabol is an anabolic androgenic steroid which is used by athletes for fitness. This study was conducted to investigate, the likely prot...

Background: Busulfan is a chemotherapy drug that is widely used for cancer treatment. However, administration of busulfan to male patients with malignant diseases may cause temporary or permanent sterility. Therefore, research into drugs or Materials to reduce the side effects of busulfan on the male reproductive system is necessary. In the present study the protective effects of L-carnitine an...

Chronic airway inflammation, one of the pathophysiologic features of bronchial asthma, is suspected to be responsible for irreversible pathological changes of airways, called airway remodeling. To examine the mechanisms of airway remodeling in asthma, we investigated the expression of epidermal growth factor (EGF) and its receptor immunohistochemically in asthmatic human airways. Airway specime...

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...

introduction: date palm gemmule has been used in traditional medicine to improve the semen quality and treat infertility. their components remedies those are rich of antioxidant and vitamins can influence spermatogenesis. the aim of this project was to evaluate the effects of date palm gommule water/alcoholic extract on reproductive tissues, sex hormone and sperm quality of rat. methods: sevent...

Objective: Busulfan(Bus) is a chemotherapy drug that is widely used for cancer treatment. The protective effect of CoQ10 evaluated on testis and sperm parameters after busulfan treatment. Design: Experimental Study Animals: Thirty tow adult male Wistar rats Procedures: In this experimental study 32 adult male Wistar rats have randomly divided into four groups: Control group ...

Cells in the stratified squamous epithelium of bovine esophagus contain abundant tonofilaments measuring 6-10 nm in diameter. Two polypeptides, extracted from esophageal epithelium with 0.05 M Tris, pH 7.4, containing 8 M urea and 25 mM beta-mercaptoethanol, comprise 35% of the total extractable protein. These polypeptides have apparent molecular weights of 46,000 and 56,000 daltons and are ric...