The following points highlight four important ways by which HIV devastates the immune system. The ways are: 1. Direct killing 2. Apoptosis 3. Destruction of un-infected cells 4. Destruction of immune precursor cells. Way # 1. Direct killing: When a large number of viruses is produced and buds out from the surface of CD4+ T cell surface, the cell membrane [...]
HIV infection can be divided into following different stages:- 1. Acute Primary Infection 2. The Immune System Strikes Back 3. Clinical Latency 4. Clinical Latency. Stage # 1. Acute Primary Infection: Once HIV enters the body, the virus infects a large number of CD4+ T cells and replicates rapidly. During this acute phase of infection, the blood has a high [...]
Get the answer of: Does Z-DNA Play a Regulatory Role? One of the more interesting discoveries of the last decade was that segments of DNA that have sequences in which purines and pyrimidines alternate along each strand can form left-handed double helices. The Watson-Crick B-form of DNA is a right-handed double helix. The novel left-handed double-helical form of DNA has [...]