3d image of batrachotoxin a skeletal formula

batrachotoxin batrachotoxin btx neurotoxic steroidal alkaloid cardiotoxic beetles birds frogs poisoning darts sodium channels nerve cells paralysis cardiotoxicity neurotoxicity depolarization nervous system lipid-soluble peripheral permeability potassium calcium heart muscles arrhythmias extrasystoles ventricular fibrillation cardiac arrest asystole acetylcholine synaptic vesicles poison venom toxicant toxic toxicity toxin toxicology poisoning danger hazard acute harmful exposure limit antidote intoxication detoxification 3d