Table 2.

Release exponent (n), rate constant (k), and correlation coefficient (R²) for the two drug-loaded micelles

Samples	Time interval (hours)	pH=7.4			pH=5.0			pH=5.0+10 mM GSH
		n	k	R2	n	k	R2	n	k	R2
mPEG-4sPLMBz	0–2	0.526	0.135	0.991	0.693	0.140	0.999	–	–	–
	3–12	0.251	0.186	0.987	0.347	0.196	0.985	–	–	–
	24–72	0.148	0.235	0.990	0.160	0.311	0.996	–	–	–
RGD-PEG-ss- 4sPLMBz	0–2	0.789	0.169	0.993	0.756	0.225	0.995	0.639	0.285	0.993
	3–12	0.215	0.282	0.953	0.219	0.367	0.973	0.215	0.417	0.966
	24–72	0.009	0.480	0.999	0.088	0.500	0.988	0.082	0.568	0.953

Abbreviations: GSH, glutathione; mPEG, methoxy poly(ethylene glycol); PEG, poly(ethylene glycol).