Fig. 2.

A, B Representative microscopy images of coronal hematoxylin and eosin–stained thyroarytenoid (TA) muscle sections on day 28 after administration of different doses of basic fibroblast growth factor (bFGF) (200 and 2000 ng: low and high dose, respectively) or saline injection (A and B: 40 × and 400 × magnification, respectively). The treated/untreated (T/U) area ratio of the entire TA muscle (C) and the individual fibers (D) of the TA muscle are shown too. The T/U ratio of the entire TA muscle in the high-dose group was significantly larger than that in the saline group on days 14, 28, and 56. The T/U ratio of individual muscle fibers in the high-dose group was significantly larger than that in the saline group on days 28 and 56. Error bars represent standard deviation. *P < .05 and **P < .01, Tukey’s multiple comparisons test