Figure 3 in Development and evolution of regionalization within the avian axial column

Figure 3. Images and associated schematic diagrams of cleared and stained axial skeletons of chicken (Gallus gallus domesticus) embryos from developmental stages 31 to 33. A, stage 31 (day 7 of incubation) right lateral view. B, stage 31 right lateral schematic. C, stage 31 posterior schematic. D, stage 32 (day 7½ of incubation) right lateral view. E, stage 32 right lateral schematic. F, stage 32 posterior schematic. G, stage 33 (day 7½–8 of incubation) right lateral view. H, stage 33 right lateral schematic. I, stage 33 posterior schematic. Blue is cartilage and dark purple represents ossified tissue within the images. Light grey is cartilage and black represents ossified tissue in the diagrams. Scale bar, 1 cm.