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Development of Amphioplus abditus (Verrill) (Echinodermata: Ophiuroidea): 1 larval biology
Hendler, G. (1977). Development of Amphioplus abditus (Verrill) (Echinodermata: Ophiuroidea): 1 larval biology. Biol. Bull. 152(1): 53-63
In: Biological Bulletin. Marine Biological Laboratory: Lancaster. ISSN 0006-3185, more
Peer reviewed article  

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Keyword
    Marine

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  • Hendler, G.

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 0.5-290 mu in diameter and contained dense and/or light amorphous substances.

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