BD培养基 223143 6 EA Difco Phosphate Buffered Saline, pH 7.2 FA Buffer, dried 干FA缓冲 
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 223143 6 EA Difco Phosphate Buffered Saline, pH 7.2 FA Buffer, dried 干FA缓冲