David's paper was published in Development "SOX2 regulation by hedgehog signaling controls adult lingual epithelium homeostasis."
Castillo-Azofeifa D, Seidel K, Gross L, Golden EJ, Jacquez B, Klein OD, Barlow LA.Development. 2018 Jul 17;145(14). pii: dev1648
Using a combination of conditional genetics and a Hedgehog pathway inhibitor, David showed that SOX2 is required downstream of Hedgehog signaling for differentiation of taste bud cells, as well as reveal a more general requirement for SOX2 in tongue epithelium renewal.