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  Indian J Med Microbiol
 

Figure 3: Signalling interactions in the initiation of the frontonasal process outgrowth. FGF8, Fibroblast growth factor 8; RA, retinoic acid; SHH, Sonic hedgehog

Figure 3: Signalling interactions in the initiation of the frontonasal process outgrowth. FGF8, Fibroblast growth factor 8; RA, retinoic acid; SHH, Sonic hedgehog