1. Phagocytic barriers- The role of ingesting and killing microbes is played by phagocytes and thes incluide:
a. Neutrophils
b. Macrophages
c. Natural killer cells (NK cells).
2. Physical and chemical anatomical barriers- Physical and Chemical or Anatomical barriers bar invasion of pathogens. They are the first to take action in defence against infection. The skin and the mucous membrane are the chief components of this category. They bar invasion by pathogens.
3. Blood proteins- Thet are also known as complement proteins. They link microbes recognition to effector and establishment of inflammation in the classical and alternative pathways of the complement systems.
HOSEA KIPYEGON answered the question on November 13, 2019 at 10:11
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