Complex sentence: The future of quinacrine sterilizations laid in abeyance until Warren Buffett revived quinacrine research by donating two million dollars to FHI, who will resume animal testing and begin human testing of quinacrine sterilizations in preparation for FDA approval.
Split into simpler sentences: The future of quinacrine sterilizations laid in abeyance until Warren Buffett revived quinacrine research by donating two million dollars to FHI. With this two million dollar donation, FHI will resume animal testing and begin human testing of quinacrine sterilizations in preparation for FDA approval.