Source: Nelson Mandela on dialysis, but responsive

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The latest on the health of Nelson Mandela

The latest on the health of Nelson Mandela



PRETORIA, South Africa (CNN) -- Former South African President Nelson Mandela has been receiving kidney dialysis and is responding to stimuli, a source with direct knowledge of the situation said Friday.

Mandela, who is on life support, is receiving the procedure, which treats kidney failure.

He been hospitalized for nearly a month for a recurring lung infection.