Table 1. K_2P channel RNA expression profile in human tissues. The table demonstrates the RNA expression levels of fifteen K_2P channels in human tissues following the online database The Human Protein Atlas (https://www.proteinatlas.org/). In general, the expression profile varies depending on the individual K_2P channel; some are expressed heterogeneously, whereas others are expressed in specific tissues. Channel names are based on the HUGO nomenclature. The indication of channel expression levels in different human tissues is categorized as abundant (+++), mild (++), and little (+). CNS: central nervous system, GI: gastrointestinal system