tetrodotoxin-insensitive

synonym: TTX-insensitive
https://doi.org/10.1351/goldbook.12134
Denoting a class of sodium ion channels, found mainly in the heart, that is not blocked by tetrodotoxin.
Note: Their significance lies in experimental characterization of channel subtypes in neuromuscular physiology, development, and drug design.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 911 [Terms] [Paper]