“…Mouse embryonic dermal skin was peeled and immunolabeled as described by Geng and Srinivasan(5).Primary antibodies for immunohistochemistry included rabbit anti-PROX1 (catalog 11-002, Angiobio), rat anti-mouse CD31 (catalog 553370, BD Pharmingen), and goat anti-mouse VEGRF3 (cata-log AF743) from R&D Systems. Secondary antibodies for IHC included Cy3-conjugated donkey anti-rabbit, Cy5-conjugated donkey anti-rat, and Alexa 488-conjugated donkey anti-goat, purchased from Jackson Immuno-Research Laboratories (catalogs 711-165-152, 712-175-150 and 705-545-147 respectively).…”