CHEMISTRY Correction for “Development of aliphatic biodegradable photoluminescent polymers,” by Jian Yang, Yi Zhang, Santosh Gautam, Li Liu, Jagannath Dey, Wei Chen, Ralph P. Mason, Carlos A. Serrano, Kevin A. Schug, and Liping Tang, which appeared in issue 25, June 23, 2009, of Proc Natl Acad Sci USA (106:10086–10091; first published June 8, 2009; 10.1073/pnas.0900004106).
The authors note that due to a printer's error, Fig. 3B appeared incorrectly. The corrected figure and its legend appear below.
Fig. 3.
Studies of polymer degradation and mechanical properties. (A) In vitro degradation of BPLP-Cys in PBS (pH = 7.4) at 37 °C (n = 5). (B) In vitro degradation of CBPLP-Cys in PBS (pH = 7.4) at 37 °C (n = 5). (C) Tensile strength and initial Young's modulus of CBPLP-Cys synthesized with various molar concentration of l-cysteine (n = 5). (D) Elongation of CBPLP-Cys synthesized with various molar concentration of l-cysteine (n = 5).