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Digitale Medien

Detection of high concentration of Mg and Ca in the nematocysts of various cnidarians (1987)

Weber, J. ; Klug, M. ; Tardent, P.

Springer

Cellular and molecular life sciences 43 (1987), S. 1022-1025

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Details

ISSN: 1420-9071

Schlagwort(e): Calcium ; magnesium ; nematocysts ; Hydra ; Cnidaria

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary An X-ray spectral analysis (EDAX) of isolated undischarged nematocysts of various cnidarians (Hydrozoa, Scyphozoa, Anthozoa) revealed the presence of extremely high concentrations of divalent cations. InHydra nematocysts both Ca2+ (conc. 0.36 μmole/mg dry cysts) and Mg2+ (conc. 0.80 μmole/mg dry cysts) ions add up to a total in situ concentration of 0.5 to 1.0 M. More than 85% of the cations, which are believed to be involved in cyst discharge, are contained in the soluble fraction of the cysts, where they must be bound to high molecular weight molecules.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01952227

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