Rihanna wants to 'refresh' bone marrow donations



Rihanna wants you to become a bone marrow donor -- or at least help her get funding for a whole lot of potential donors.

The singer -- who will perform on "American Idol" on Wednesday -- is leading a campaign to get $250,000 in funding for DKMS, the largest bone marrow donor center in the world. The money would come from the Pepsi Refresh project, which is doling out $20 million to various worthy causes.

Rihanna's own foundation is also involved in the effort.

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