hematology :-immunity:-

on

 immunity:-

1)innate immunity 

2)acquired immunity -cell mediated

                                 -humeral

1)cell mediated immunity:-

-T lymphocyte

-process in thymus

-long immunity

-direct attack by providing cytokines


humeral immunity:-

-B immunity

-process in bone marrow

-amount 20 % 

-short immunity

-antibodies are produced against antigen


phagocytosis;-

-cell eating  or engulfing  of microbes

-monocytes and neutrophil

steps:- 

  • margination-WBC moves toward the periphery of the blood vessel
  • diapedesis-WBC try to come out or squeeze from vessel by forming pseudopodia
  • +ve  chemotaxis-because of toxins produces by antigen microbe ,WBC moves toward the infected area
  • opsinisation-microbes are covered by proteins to make it favorable to engulfing
  • endocytosis-phagosome vesicle formed 
  • digestion:-digestion of phagosome by lytic enzymes

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