Figure 3. Hematoxylin and eosin–stained sections from 1- to 2-month-old mice. Altered development of the ciliary body (cb) is apparent in mice overexpressing transforming growth factor beta (TGFβ); however, these features were absent in wild-type (WT) and matrix metalloproteinase-9 knockout (MMP-9KO) mice. 20X, bar=100 µm.