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, [...]
The following points highlight the two main causes of actively acquired immunity. The causes are: 1. Infectious Agents 2. Vaccination. Actively Acquired Immunity: Cause #Â 1. Infectious Agents: Infectious Agents of two types: (a) Some Infections: Diphtheria, whooping cough, small pox and mumps induce a long lasting immunity, (b) Some Infections: Common cold and influenza confer immunity lasting for a short [...]