Figure 5. Images and associated schematic diagrams of cleared and stained axial skeletons of chicken (Gallus gallus domesticus) embryos from developmental stages 37 to 39. A, stage 37 (day 11 of incubation) right lateral view. B, stage 37 right lateral schematic. C, stage 37 posterior schematic. D, stage 38 (day 12 of incubation) right lateral view. E, stage 38 right lateral schematic. F, stage 38 posterior schematic. G, stage 39 (day 13 of incubation) right lateral view. H, stage 39 right lateral schematic. I, stage 39 posterior schematic. Blue is cartilage and dark purple represents ossified tissue. Light grey is cartilage and black represents ossified tissue in the diagrams. Scale bar, 1 cm.