Carroll, C, Engstrom, N, Nilsson, P F, Haxen, E R, Mohlin, S, Berg, P, Glud, R N & Hammarlund, E U 2021, ' Hypoxia Generated by Avian Embryo Growth Induces the HIF-alpha Response and Critical Vascularization ', Frontiers in Ecology and Evolution, vol. 9, 675800 . https://doi.org/10.3389/fevo.2021.675800 Frontiers in Ecology and Evolution Frontiers in Ecology and Evolution, Vol 9 (2021)