Nomenclature of Targets and Ligands
Key protein targets and ligands in this article are hyperlinked to
corresponding entries inhttp://www.guidetopharmacology.org,
the common portal for data from the IUPHAR/BPS Guide to PHARMACOLOGY
(Harding et al., 2018), and are permanently archived in the Concise
Guide to PHARMACOLOGY 2019/20 (Alexander et al., 2019).