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Morphological and cytochemical studies on the secretory granules of the pyloric caeca of the starfish, Asterias amurensis
Hori, S.H.; Tanahashi, K.; Matsuoka, N. (1977). Morphological and cytochemical studies on the secretory granules of the pyloric caeca of the starfish, Asterias amurensis. Biol. Bull. 152(1): 64-74
In: Biological Bulletin. Marine Biological Laboratory: Lancaster, Pa. etc.. ISSN 0006-3185, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Hori, S.H.
  • Tanahashi, K.
  • Matsuoka, N.

Abstract
    A fraction rich in secretory granules was prepared from the pyloric caeca of Asterias amurensis by sucrose density gradient centrifugation. The freshly prepared fraction exhibited no casein-hydrolyzing activity, but showed nine times as much specific activity as that of tissue homogenates after incubation at 37 degrees C for thirty minutes. Electron microscopy showed that the secretory granules were membrane-bound granules measuring 0.5-2.0 mu in diameter and contained dense and/or light amorphous substances.

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