ASMS2013_Proteomic Analysis of Perineural Invasion in Pancreatic Adenocarcinoma Reveals Up-Regulation of Neurosecretory Protein VGF in Invaded Nerves POSTED May 18, 2015 ASMS2013_Proteomic Analysis of Perineural Invasion in Pancreatic Adenocarcinoma Reveals Up-Regulation of Neurosecretory Protein VGF in Invaded Nerves