Mode of Storage of Histamine in Mast Cells

Abstract
Histamine containing granular material was collected from water lysed peritoneal rat mast cells. The histamine was observed to be released in the presence of cations. A re‐uptake of the amine occurred on suspension of depleted granular material in histamine containing solutions. Release as well as uptake of histamine occurred rapidly at 0°C. The results are in accordance with the idea that histamine is electrostatically bound to a granular protein‐heparin complex, the release and uptake of the amine being a physical process depending on the extra‐ and intra‐granular concentration ratios of histamine and cations.

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