Figure 5

Effect of PEGylation of MSNR on drug release. The released amount of MTX was determined from supernatant absorption at 658 nm. (Inset: detailed release within the first 7 h).

Effect of PEGylation of MSNR on drug release. The released amount of MTX was determined from supernatant absorption at 658 nm. (Inset: detailed release within the first 7 h).