AIM:To obtain differentially expressed proteins in esophageal cancer in Xinjiang Kazakh patients by using a comparative proteomic method to provide clues to early diagnosis and therapy of this malignancy.METHODS:Two-dimensional gel electrophoresis(2-DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-TOF-MS) were utilized for the identification of proteins differentially expressed between cancer and adjacent non-cancerous tissue.The differential expression of HspB1 was...