BD培养基 227620 100 mL EA Difco Supplement B with Reconstituting Fluid B W/FLUID添加剂 100ML 
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 227620 100 mL EA Difco Supplement B with Reconstituting Fluid B W/FLUID添加剂 100ML