Guest guest Posted March 20, 2010 Report Share Posted March 20, 2010 Advances in the serodiagnosis of viral hepatitis have been dramatic, and the findings of specific viral antigens have led to further elucidation of the course of infections. The “Australia antigen,†discovered in 1960, was first renamed hepatitis-associated antigen (HAA) and then, finally, hepatitis B surface antigen (HBsAg). It appears in the blood early after infection, before onset of acute illness, and persists through early convalescence. HBsAg usually disappears within 4 to 6 months after the start of clinical illness except in the case of chronic carriers. Hepatitis B 37 antigen (HBeAg) appears during the early acute phase and disappears before HBsAg is gone, although it may persist in the chronic carrier. Persons who are HBeAg-positive have higher titers of HBV and therefore are at a higher risk of transmitting the disease. HBeAg has a high correlation with DNA polymerase activity. The hepatitis B core antigen (HBcAg) is found within the nuclei of infected hepatocytes and not generally in the peripheral circulation except as an integral component of the Dane particle. The antibody to this antigen, anti-HBc, is present at the beginning of clinical illness. As long as there is ongoing HBV replication, there will be high titers of anti-HBc. During the early convalescent phase of an HBV infection, anti-HBc may be the only detectable serologic marker (window phase) if HBsAg is negative and anti- HBsAg has not appeared.LyudmylaHuhley From: ahmad adel <a-adel82hotmail (DOT) com>Subject: RE: Help answer this questionDate: Friday, 19 March, 2010, 12:33 hi end diastolic pressure left ventricle = 130 end systolic pressure in left ventricle = 50 end diastlic pressure rt ventricle = 25 end systolic " " " = 10 From: fatin952004Date: Fri, 19 Mar 2010 11:15:02 +0000Subject: Help answer this question Hi ,Could any oneone help me to answer this question, please?Q: what are the pressure with in the chambers of the heart in systole and diastole? Give values for each of the four chambers in mmHg.Thanks Hotmail: Trusted email with Microsoft’s powerful SPAM protection. Sign up now. Your Mail works best with the New Optimized IE8. Get it NOW!. Quote Link to comment Share on other sites More sharing options...
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