Bioavailability of Lutein from Marigold Flowers (Free vs. Ester Forms): A Randomised Cross-Over Study to Assess Serum Response and Visual Contrast Threshold in Adults

万寿菊中叶黄素（游离型与酯化型）的生物利用度：一项评估成人血清反应和视觉对比度阈值的随机交叉研究