BD培养基 268620 500 g EA Difco D/E (Dey/Engley) Neutralizing Agar D/E中和琼脂 
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 268620 500 g EA Difco D/E (Dey/Engley) Neutralizing Agar D/E中和琼脂