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 [...]
Everything you need to know about immunology. Some of the frequently asked questions are as follows:- Q.1. What is immunology? Ans. Study of a host's specific defense to a pathogen or a foreign substance is called immunology. Q.2. What is an antigen? Ans. A substance which on entering a body causes formation of antibodies and reacts only with a specific [...]
In this article we will discuss about the history of plant virology. In 1879, Adolf Mayer (Director of the Agricultural Experiment Station at Wageningen, The Netherlands) was the first to study this disease of tobacco. He is credited as the first person to transmit tobacco mosaic virus by using the extracts from the diseased plant as the inoculum to the [...]