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Their removal from the site after the removal of infection is an important step in the resolution of the lesion. Under physiological conditions the neutrophils undergo a process called '''apoptosis''' (or ''Programmed Cell Death''), and are then cleared by tissue macrophages (see above). However, if there are too few macrophages to clear the cells, or the infection is resulting in the death of the neutrophils, they undergo a process called '''necrosis'''. When these neutrophils accumulate at the site of infection it forms '''pus'''.

Their removal from the site after the removal of infection is an important step in the resolution of the lesion. Under physiological conditions the neutrophils undergo a process called '''apoptosis''' (or ''Programmed Cell Death''), and are then cleared by tissue macrophages (see above). However, if there are too few macrophages to clear the cells, or the infection is resulting in the death of the neutrophils, they undergo a process called '''necrosis'''. When these neutrophils that have undergone necrosis accumulate at the site of infection it forms '''pus'''.

==[[Eosinophils|Eosinophils]]==

==[[Eosinophils|Eosinophils]]==