BD培养基 212485 500 g EA Difco Super Broth Base, Select APS (Alternative Protein Source) APS选择性超级肉汤 
修饰性PEG
DSPE SH COOH MAL NH2 巯基 羧基 氨基 四臂 八臂PEG WAKO和光纯药
BD培养基 212485 500 g EA Difco Super Broth Base, Select APS (Alternative Protein Source) APS选择性超级肉汤