The Perfect

INTRODUCTION Hepatitis is defined simply as injury to liverwort cells and percolation of inflammatory cells into the colored; it is not an uncommon reflectivity of a variety of systemic infectious processes (Be atomic hail 18, P. and Daviss G.1991). Hepatitis is an inflammatory state of the liver that may be caused by exposure to toxic chemicals, by autoimmune disease, or by transmittance (Gladwin, M., and Trattler, B. 1995) (Beeson, P. B. and McDermott, W. 1979). The viral infection most comm further associated with hepatic inflammation includes hepatitis A, B, C, D and E (Dienstag, 1998). Since the development of jaundice is a characteristic feature of liver diseases, testing patients sera for the presence of special(prenominal) anti-viral antigens or antibodies stub only make a crystallize diagnosis. Transmission of viral hepatitis is by the fecal-oral route. Blood and secretions (blood, saliva and sperm) can also be contagious. grime needles are a considera ble problem wherever needles are shared. Most cases of hepatitis are overdue to viral infections: Hepatitis A, Hepatitis B, Hepatitis C, Hepatitis B with D, Hepatitis E, Hepatitis F virus (existence unknown), Hepatitis G, or GBV-C.

Hepatitis A virus In 1985 Lemon SM reported that Hepatitis A virus (HAV), classified as hepatovirus, is a small, unenveloped symmetrical ribonucleic acid virus, which shares many of the characteristics of the picornavirus family, and is the cause of infectious or epidemic hepatitis genetic by the fecal-oral route. The HAV genome comprises about 7,500 nucleotides of positive sentiency RN A, which is polyadenylated at the 3 give up! and has a polypeptide attached to the 5 end. A single, gargantuan open course session frame (ORF) occupies most of the genome and encodes a polyprotein with a theoretical molecular(a) mass of 2,52,000. The HAV polyprotein is processed to yield the geomorphologic (located at the amino-terminal end) and non-structural viral polypeptides. Many of the features of replication of the picornaviruses have been...If you fatality to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay