Tunis, M Ribonuclease activity in commercial crystalline trypsin and a method for removal. [electronic resource] - Science (New York, N.Y.) Nov 1968 - 912-3 p. digital Publication Type: Journal Article ISSN: 0036-8075 Standard No.: 10.1126/science.162.3856.912 doi Subjects--Topical Terms: AnimalsCarcinoma, Ehrlich TumorChromatography, GelCrystallizationMethodsRNA, NeoplasmRibonucleases--analysisSolubilityTrypsin--isolation & purification