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Biochemical and Morphological Studies of Rat Submandibular Gland: I. Centrifugal Fractionation of Granule-Rich Fraction

Journal of Dental Research
SAGE Publications
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Submandibular glands from male rats were homogenized in 0.34 M sucrose and 0.5 mM ethylenediaminetetraacetic acid in 10 mM HEPES buffer at a pH of 7.4. The extract was centrifuged and filtered through nuclepore filters to prepare a granule-rich fraction. Electron dense zymogen granules constituted approximately 85% of the particles in this fraction which also contained about a third of the total alkaline esterase activity in the gland.

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