“…Prox1 homologues have been identified in other vertebrates, including Xenopus, zebrafish, chicken, and human (Tomarev et al, 1996;Glasgow and Tomarev, 1998;Ny et al, 2005). In vertebrates, Prox1 is expressed in the developing neural retina, lens, cochlea, spinal cord, brain, skeletal muscle, heart, liver, pancreas, and in the endothelial cells that will give rise to the lymphatic vasculature (Oliver et al, 1993;Tomarev et al, 1996;Glasgow and Tomarev, 1998;Burke and Oliver, 2002;Wigle et al, 2002;Wang et al, 2005;Bermingham-McDonogh et al, 2006).…”