参考文献:
EXELIXIS, INC. BOLLU, Venkataiah BOREN, Brant, Clayton DALGARD, Jackline, Eve FLATT, Brenton, T. HAQ, Nadia HUDSON, Sarah MOHAN, Raju MORRISSEY, Michael PRATT, Benjamin WANG, Tie-lin Patent: WO1/93845 A1, 1 Location in patent: Page/Page column 153 WO 1/93845 A1