Causes and Process of Apoptosis Inhibitory Factors Stimulatory Factors Physiological Initiation Physiological GFS, estrogen, etc, Fasl. Pathological Pathological virus: chemicals, etc glutamate, free radicals; therapeutics Regulation Conserved Execution growth factor Glucocorticoids activat radiation essential ceptor attacks target Phagocytosis Unknown Unknown Requires po3 trigger Initiated by deathInitiation Regulation Execution Phagocytosis Physiological: GFs, estrogen, etc; Pathological: virus; chemicals, etc. Inhibitory Factors Stimulatory Factors Physiological: FasL; Pathological: glutamate, free radicals; therapeutics. Conserved Causes and Process of Apoptosis