Movie S1.

Light-sheet microscopy of a whole-mount preparation of a patch of dorsal bill skin (0.64 mm2) from a late-stage duck embryo stained with Tuj1 antibody. Staining reveals a high-density population of Grandry and Herbst mechanosensory corpuscles together with underlying trigeminal mechanoreceptors.

Molecular basis of tactile specialization in the duck bill

Eve R. Schneider, Evan O. Anderson, Marco Mastrotto, Jon D. Matson, Vincent P. Schulz, Patrick G. Gallagher, Robert H. LaMotte, Elena O. Gracheva, and Sviatoslav N. Bagriantsev

PNAS. 2017. DOI: 10.1073/pnas.1708793114