TY - RPRT TI - Expansion of apical extracellular matrix underlies the morphogenesis of a recently evolved structure AU - Smith, S. J. AU - davidson, L. A. AU - Rebeiz, M. PY - 2019 DO - 10.1101/686089 UR - https://www.biorxiv.org/content/10.1101/686089v1 ID - 10.1101/686089 ER -