“…6, 37, 38 Primary antibodies: Upk1a, Upk2, Upk3b, Shh, p63 (Santa Cruz Biotechnology, Santa Cruz, CA), Upk3a (Fitzgerald Industries International, Acton, MA), Krt13, Krt5, Krt14 (Covance, Princeton, NJ), and Krt20 (Dako North America, Inc., Carpinteria, CA) were detected using Anti-Polyvalent or Anti-Goat and, HRP/DAB reagents (Scytek Laboratories, Logan, UT). Sections were imaged using an Olympus BX51 microscope and CX9000 camera.…”