 Nyorai kupfuurira kweiyi ndima - Kupesana nezvose zvinopesana, kuedza kwakawanda kwakapona kuputika kwa2003yeSpace Shuttle Columbia. Chimwe chazvo chakanga chiri kuedza kwokuyera mapuroteni kwakatsigirwa naSchering-Plough. Pavaiongorora zvaibuda, masayendisiti akawana chinhu chinonzi interferon chavakanga vasati vamboona. Vakawana kuti kristaro yacho yaiva chigadzirwa chemagetsi mashoma uye yaiva neshanduro itsva yeinterferon iyo yaibudirira zvikuru mukurapa Hepatitis C uye yaibudisa migumisiro mishoma. Zvichibva zvikurukuru pamashoko aya, Schering-Plough yakagadzirazve imwe yemishonga yayo inotengeswa zvikuru, yakagamuchira tendero yeFDA, uye mushonga mutsva zvino uri kutengeswa. 