Fig. 3. The number of hyaloid vessel profiles in vitreous (A) and TVL (B) at different days in sections from wild-type (open squares, WT) and homozygous Col18a1^–/– null (filled circles) mice. At each time point means of data from eight wild-type and nine Col18a1^–/– mice are shown. Standard errors of the mean are indicated by vertical bars; significant differences between wild-type and knockout values are indicated by triple asterisks.