implications of purinergic receptor-mediated intracellular a retinoid x receptor (rxr)-selective retinoid reveals that rxr alveolar epithelial β2-adrenergic receptors 慢性咳嗽突破:p2x3受体阻断剂gefapixant两个关键3期临床成功 anti-retinoid x receptor a, clone 4e9 (mouse monoclonal)