1、Ergosterol is a precursor of vitamin D2 and is found in fungi and yeast.
Ergosterol是维生素D2的前体，存在于真菌和酵母中。
2、The presence of ergosterol in the cell membrane helps maintain membrane fluidity and integrity.
细胞膜中的ergosterol的存在有助于保持膜的流动性和完整性。