From Yahoo Music

See, hip-hop mogul 50 Cent is a nice guy after all. Just don’t tell his nemeses Rick Ross and Fat Joe.

The tough-guy rapper, who just premiered his new film Twelve last week, recently registered as a bone marrow donor in an effort to help a young actress diagnosed with leukemia.

When 50 Cent heard that 11-year-old Shannon Tavarez needed a bone marrow transplant, he and G-Unit member Tony Yayo registered with DKMS and were added to the Be The Match Registry.

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