An antagonism between iodine and fluorine.
D005459:Fluorides; D005461:Fluorine / Q000494:pharmacology*; D006791:Hostility; D006801:Humans; D007454:Iodides; D007455:Iodine / Q000378:metabolism*; D013961:Thyroid Gland / Q000378:metabolism*; D014781:Viscera
D007454:Iodides; D005461:Fluorine; D007455:Iodine; D005459:Fluorides
FLUORINE/effects; IODINE/metabolism; THYROID GLAND/metabolism