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Science 13 June 1980:
Vol. 208. no. 4449, pp. 1262 - 1263
DOI: 10.1126/science.208.4449.1262
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Articles

Aragonite Twinning in the Molluscan Bivalve Hinge Ligament

MARY E. MARSH 1 and RONALD L. SASS 1

1 Department of Biology, Rice University, Houston, Texas 77001

Molluscan bivalve hinge ligaments are composed of long needle-shaped aragonite crystals embedded in a protein matrix. These crystals are twinned and, in general, the twin forms a thin lamella through the center of the crystal.

Submitted on December 3, 1979
Revised on February 5, 1980

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Science. ISSN 0036-8075 (print), 1095-9203 (online)