In this article we will discuss about the historical perspectives and types of immunity. Historical Perspectives of Immunity: The phenomenon of immunity (Latin immunis means 'exempt') can be traced back to Thucydides, the great historian of Peloponnesian War. In 430 BC he wrote that a plague spread in Athens, only those could nurse the sick who recovered from the plague [...]
In this article we will discuss about the attributes of acquired immunity. Acquired immunity or Adaptive immune response reflects the presence of a functional immune system that is capable of specifically recognizing and selectively eliminating foreign microorganisms and molecules. Unlike innate immune responses, adaptive immune responses are not the same in all the members of a species, but are specific [...]
The following points highlight the four main components of innate immunity. The components are: 1. Physical and Chemical or Anatomical Barriers 2. Phagocytic Barriers 3. Blood Proteins 4. Cytokines. Component # 1. Physical and Chemical or Anatomical Barriers: Physical and Chemical or Anatomical barriers that tend to prevent the entry of pathogens are an organism's first line of defense against [...]