Figure S1. The hip joint inerzone. from Morphogenetic mechanism of the acquisition of the dinosaur-type acetabulum

(a) Histological section of an isolated HH30 (the stage we used for co-culture experiments) chicken femoral anlagen. (b) The magnification of the interzone region. Square, the region magnified in b; square bracket in b, the hip joint interzone. Scale bars, 0.5 mm in a, 0.1 mm in b.