Radioligand binding was performed using membranes from CHO-K1 cells stably transfected with the human 5-HT2A receptor (PerkinElmer). All assays were carried out in duplicates. Data were fitted to a one-site curve-fitting equation with Prism 6 (GraphPad Software) and Ki values were estimated from the Cheng − Prusoff equation. The full description of this assay is in Supplementary material.
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