Stephens, R E The mitotic apparatus. Physical chemical characterization of the 22S protein component and its subunits. [electronic resource] - The Journal of cell biology Feb 1967 - 255-75 p. digital Publication Type: Journal Article ISSN: 0021-9525 Standard No.: 10.1083/jcb.32.2.255 doi Subjects--Topical Terms: AcidsAlkaliesAnimalsGlycolsGuanidine--pharmacologyHydrogen-Ion ConcentrationMolecular WeightOvum--chemistryProteins--analysisSea UrchinsSpindle Apparatus--chemistrySubcellular Fractions--chemistrySulfur--analysisUrea--pharmacology