The term, 'vaccination' originated from vacca which means cow. The term was first used by Edward Jenner who discovered (1798) that cow-pox induced immunity to small-pox in persons artificially inoculated with cow-pox. This process of inducing immunity against small pox came to be known as vaccination which saved millions of human lives since then and has eventually led to complete [...]
In this article we will discuss about Immunity:- 1. Definition of Immunity 2. Determinants of Natural Immunity 3. Mechanism. Definition of Immunity: The term immunity (Lat. immunis—freed from homage, save from something) means resistance of the body to the pathogenic microbes, their toxins or to other kinds of foreign substances. In other words, it can be defined as the body's [...]
The following points highlight the top two types of immune response. The types are: 1. Humoral Immune Response 2. Cell Mediated Acquired Immune Response. Type # 1. Humoral Immune Response: After first contact of the tissue with the antigen, there is an interval of about two weeks before antibody can be found in the blood and during this initial period, [...]