Essays on Histology

Tissue Staining

Q.7 Epithelium covers body surfaces, lines hollow organs and also forms gland. They serve as protective covers to the underlying tissues and prevents harm caused by physical, chemical and biological agents, to a significant extent. In addition, they also act as barriers, allowing the selected entry and exit of substances across the epithelium. The glandular epithelium has secretory function. Example: Epithelium of the pancreas, stomach, intestine, kidney. The epithelium lining the stomach and intestine help to absorb nutrients. (Henrikson, Kaye and Mazurkiewicz,1997) Q1. Micrograph A : Simple cuboidal epithelium. The cube shape of the cells and the centrally ...

Hepatitis type B viral infection is a common and serious disease that is caused by the hepatitis B virus (HBV). HBV is a DNA virus with partial double strands and belongs to the Hepadnaviridae family. One-third of the world’s population is believed to have been infected by HBV of which 6% have chronic HBV infection. Depending on the rate of infection and carrier rate, the world is divided into low, medium and high endemicity regions (Franco et al. 75). The HBV resides in the bodily fluids of an infected individual and is transmitted via the same (Aspinall et ...

Abstract

Introduction Display of Data Materials and Methods Results Discussion Conclusion Abstract The aim of this project was to investigate the incidence of follicular carcinoma in follicular lesions as reported by fine needle aspiration (FNA) in King Abdulaziz University Hospital. It was observed that a high percentage of these follicular lesions were benign. Of major concern is that a large percentage of these clients undergo surgery to establish a diagnosis. It is advocated that alternative measures should be adopted to reduce unnecessary surgeries. Hence, reducing cost, morbidity and the psychological impact on the patient of uncertain ...