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Ultrastructural and biochemical study of extracellular matrix vesicles in normal alveolar bone of rats.

作者信息

Bab I A, Muhlrad A, Sela J

出版信息

Cell Tissue Res. 1979 Oct 2;202(1):1-7. doi: 10.1007/BF00239215.

DOI:10.1007/BF00239215
PMID:159774
Abstract

The occurrence of vesicles in the extracellular matrix of alveolar bone of normal young rats was demonstrated by both ultrastructural and enzymatic studies. Transmission electron microscopy revealed abundant vesicles in the matrix. The presence of hydroxyapatite crystals, both within the vesicles and in the matrix, was affiliated with rupture of the vesicular membrane. Calcifying nodules were scarce. High levels of both specific and total activities of alkaline- and pyrophosphatases were found in the fraction of isolated vesicles. This fraction also showed activities of different ATPases and acid phosphatase.

摘要

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