Isotalo, Phillip A Presence of birefringent crystals is useful in distinguishing thyroid from parathyroid gland tissues. [electronic resource] - The American journal of surgical pathology Jun 2002 - 813-4 p. digital Publication Type: Comparative Study; Letter ISSN: 0147-5185 Standard No.: 10.1097/00000478-200206000-00019 doi Subjects--Topical Terms: BiopsyCalcium Oxalate--analysisCrystallizationFrozen SectionsHumansMicroscopy, Polarization--methodsParathyroid Glands--pathologyThyroid Gland--pathology