any of the factors in the blood whose actions are essential for blood coagulation

血液中で血液凝固に重要な役割を果たす因子

a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals

白色の金属元素で、明るい光を放って燃えます。地殻で五番目に豊富な元素で、ほとんどの植物や動物の重要な成分です。