Fig. 6From: Design and validation of recombinant protein standards for quantitative Western blot analysis of cannabinoid CB1 receptor density in cell membranes: an alternative to radioligand binding methodsRadioligand binding assays in crude synaptosomes from rat brain cortex. A Representative saturation binding curves for [3H]SR141716A (0.01–10 nM) in the absence (empty circles) and in the presence of exogenously added 100 µM GTPγS (filled circles). B Representative saturation binding curve for [3H]-CP55940 (0.01–10 nM). Each point in curves corresponds to the mean ± SEM value of one independent experiment performed in triplicate. Mean values of the maximal number of sites (Bmax) and affinity (KD) averaged across three independent experiments are shown in Table 4Back to article page