钩针织物
发表于 2025-3-30 08:31:25
https://doi.org/10.1007/978-3-662-67287-7e diet of the chick. When the chicks were fed diets which had been extracted with nonpolar solvents to remove the sterols, they developed internal haemorrhages and blood taken from these chicks clotted slowly. In 1935, Dam proposed that the curative factor present in vegetable and animal sources was