Cripps, D J Fluorescing erythrocytes and porphyrin screening tests on urine, stool, and blood. Investigation of photosensitivity. [electronic resource] - Archives of dermatology Dec 1967 - 712-20 p. digital Publication Type: Journal Article ISSN: 0003-987X Subjects--Topical Terms: AdultChildDiagnosis, DifferentialErythrocytesFeces--analysisFluorescenceHumansMicroscopy, FluorescencePhotosensitivity Disorders--etiologyPorphyrias--classificationPorphyrins--blood