García-Suárez, Olivia Neuroendocrine tumors show altered expression of chondroitin sulfate, glypican 1, glypican 5, and syndecan 2 depending on their differentiation grade. [electronic resource] - Frontiers in oncology 2014 - 15 p. digital Publication Type: Journal Article ISSN: 2234-943X Standard No.: 10.3389/fonc.2014.00015 doi