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. Author manuscript; available in PMC: 2014 Nov 12.
Published in final edited form as: Nature. 2014 Jun 18;511(7507):41–45. doi: 10.1038/nature13496

Figure 2. Expression of early patterning genes: Shh, Ptch1, Gli1, and HoxD13.

Figure 2

a, mouse hind limb (HL). b, three-toed jerboa, D sagitta, hind limb. c, horse hind limb. d, mouse fore limb (FL). e, camel fore limb. f, pig fore limb. Scalebars = 1 mm.