Skip to main content
. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Curr Drug Deliv. 2014;11(2):279–286. doi: 10.2174/1567201811666140118224616

Fig. 3.

Fig. 3

Ratios of ABR threshold values after 0.05 mL intratympanic injections of copolymer systems to those before injections in guinea pigs over 28 days in vivo. The average threshold values of ABR were 35–50 dB before the injections. Injection of 0.1 mL saline was the control. Symbols: dotted bars, synthesized PLGA-PEG-PLGA; striped bars, commercial PLGA-PEG-PLGA; open bars, saline (control). D0, D7, D14, D21, and D28 indicate ABR data on 7 days, 14 days, 21 days, and 28 days after the injection, respectively. 8kHz, 16kHz, and 32kHz indicate the frequency. Mean ± 95% confidence interval (n ≥ 4).