Answers
Phagocytosis is a process in which some immune cells in our body like phagocytes engulf the pathogen which takes entry in our body. Whenever any pahogen gets entered in our body pur body respond against that and take that as a foreign particle and perform various activities to remove that from body, in response of that inflammatory response actively brings immune cells to the site of infection by increasing blodd flow to that area, by this our special cells in blood WBC starts its work to remove that foreign particle,one of the major cells are phagocytes which do phagocytosis (engulfment of pathogen).
Complement is an immune response that mark pathogens fo destruction and by the help of some enzymes like lysozyme,it makes holes in the cell membrane of pathogen which lead to death of pthogen and host body gets protected from disease .
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