Fig. 2
From: Ectopic Fgf signaling induces the intercalary response in developing chicken limb buds
The skeletal phenotypes. a Time schedule of the experiment. b The intact chicken wing. c The skeletal pattern derived from the amputated limb bud three-quarters from the distal tip at st. 24. d The skeletal pattern of the limb bud from which the middle part was dissected out. An intercalary induced structure could be observed. e An Fgf2 + Fgf8-soaked bead induced the intermediate (zeugopodial) structures between the stump and the graft. The scale bar in B is 2 mm