CHRNA7 and COVID-19: Moreover, we present the docking of the endogenous agonist acetylcholine, as well as of several other exogenous agonists like nicotine [37], carbamylcholine [38], galantamine [39], epibatidine [40], varenicline [41], succinylcholine [42], and cytisine [43], to the S1- α7 nAChR complex [35], to highlight their pharmacologic potential against COVID-19.