Explain etiology, Biology

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Etiology

Fevers can be caused due to

1. Internal (endogenous) factors:  This could be caused within the body. Examples are antigen-antibody reactions, malignant cancer, graft rejections.

2. External (exogenous) factors:  These are caused  by  bacteria,  fungi, virus etc. which  invades  the  body.  The cause  is from a  source outside the body.

 


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