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Assay Method Information |
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| | In Vitro Binding Assay |
| Description: | Receptor binding assays were performed in at least 5 concentrations, with two parallel samples in each concentrations, in at least two independent experiments using the binding buffer (50 mM Tris-HCl, pH 7.4, 5 mM MgCl2), rat H3 membrane (140 μg protein/tube), and N-α-[Methyl-3H]methylhistamine dihydrochloride (1 nM) as radioligand. Non-specific binding was determined in the presence of 10 μM thioperamide. The samples were incubated in a final volume of 0.50 ml for 30 min at 25° C. Binding reactions were terminated by rapid filtration through UniFilter GF/B fiber glass filters presoaked for at least 2 h in 0.5% polyethylene imine (PEI). The filterplates were washed nine times with 0.5 ml of ice-cold washing buffer (50 mM Tris-HCl, pH 7.4, 5 mM MgCl2, 10 μg/ml saponine). The filterplates were dried at 50° C. for 45 min and 40 μl of Microscint20 (Packard) scintillation cocktail was added to each well. Filters radioactivity was determined by |
| Affinity data for this assay | |
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