Heck, D E Ryanodine-sensitive calcium flux regulates motility of Arbacia punctulata sperm. [electronic resource] - The Biological bulletin Oct 2003 - 185-6 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0006-3185 Standard No.: 10.2307/1543243 doi Subjects--Topical Terms: AnimalsCaffeine--pharmacologyCalcium--metabolismFemaleFlow CytometryMaleOvum--chemistryRuthenium Red--pharmacologyRyanodine--pharmacologySea Urchins--metabolismSeawaterSperm Motility--drug effects