TY - RPRT TI - Sperm gatekeeping: 3D imaging reveals a constricted entrance to zebra finch sperm storage tubules AU - Mendonca, T. AU - Cadby, A. J. AU - Hemmings, N. PY - 2018 DO - 10.1101/451484 UR - https://www.biorxiv.org/content/10.1101/451484v1 ID - 10.1101/451484 ER -