07/17/2012 08:11 am ET | Updated Sep 16, 2012

Michael Clarke Duncan On Respirator Following Heart Attack

Michael Clarke Duncan "is fighting like a mutha" and his heart is as strong as an ox -- sources involved in his treatment tell TMZ.

We broke the story, Michael went into full cardiac arrest early Friday morning and his girlfriend Omarosa did heroic CPR and re-started his ticker -- especially miraculous since he weighs 325 pounds.

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