'Reaper' protein strikes at mitochondria to kill cells

http://www.biologynews.net/archives/2010/10/20/reaper_protein_strikes_at_mitochondria_to_kill_cells.html
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This can be a very good thing when dangerous cells are permitted to kill themselves. Its good when cells that are cancerous self-destruct. But, its bad when cells destroy themselves and they are something we need like memories. Scientists will enable them eventually to manipulate the process to kill the cells we want to kill and protect the ones we don't.Reaper interferes with molecules called inhibitor of apoptosis proteins (IAPs).Reaper essentially takes the brakes off the process of apoptosis.

I think its shocking to know that our cells do this. I did not know that they could destroy themselves and cripple some parts of our bodies that we need. I also think it would be a good idea for scientists to control this because its not always good that they explode