Additional file 1: Figure S1.
Lung phenotype after Sox9 knockout at embryonic day (E) 15.5. (A-D) Bright-field and dark-field pictures of (A, C) wild-type and (B, D) mutant Sox9 knockout mouse lungs. (E, F) Alcian blue staining of longitudinal sections of (E) wild-type and (F) mutant Sox9 knockout mouse trachea. C′ and D′ are high magnification pictures of C and D, respectively.
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Turcatel et al. BMC Biology 2013 11:117 doi:10.1186/1741-7007-11-117