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(a) H2S release kinetics of NSHD1 (100 μM) in the presence of 1 mM cysteine. (b) H2S release kinetics of H2S-fibers generated from 6%, 9% and 12% w/v H2S donor/PCL solutions (H2S donor:PCL = 1:10) in the presence of 1 mM cysteine. All data are expressed as mean ± SEM (n = 3). SEM images of H2S-fibers generated from 6% (c), 9% (d) and 12% (e) w/v H2S donor/PCL solutions after in vitro release in pH =7.4 buffer solutions for 48 h.
