A new study will test the blood of Ebola survivors to help treat Ebola patients in West Africa.
The Bill and Melinda Gates Foundation is leading the group of donors supporting the study.
In it, plasma will be collected from survivors and then used to treat new victims of the disease.
Officials say several Ebola patients have received plasma from survivors and recovered.
But doctors say there is no way to know whether this method will work unless the study is conducted.
Which is where the Gates Foundation and other donors come in. The Gates foundation alone is donating $5.7 million to help fund the project, with more than a dozen other companies and universities contributing supplies and volunteers.