不ふ凍とうタンパク質しつMeanings1nounantifreeze proteinBiochemistry term for proteins that lower the freezing point of bodily fluids in cold-adapted organisms.不ふ凍とうタンパク質しつは、極きょく地ちの魚さかなの血けつ液えき中ちゅうに存そん在ざいする。Antifreeze proteins are present in the blood of polar fish.