摘要:Scientific Reports 3 , Article number: 1028 10.1038/srep01028 ( 2013 ); Published: 4 January 2013 ; Updated: 1 July 2013 There are two typographical errors in the legend of Figure 1. The sentence, “Idealized chemical structure of hydroxypropylcellulose (HPC), R-CH 2 CH(OR′)CH 3 or -H (R′- H or -CH 2 CH(OH)CH 3 ), with an average degree of substitution of 3.5″ should read, “Idealized chemical structure of hydroxypropylcellulose (HPC), R-OCH 2 CH(OR′)CH 3 or -OH (R′- H or CH 2 CH(OH)CH 3 ), with an average degree of substitution of 3.5″.