And if you're wondering, creatine is an amino acid compound and NOT a steroid.

你可能会想知道，肌酸是基酸化合，而不是类固醇。

So this is where we're seeing a lot of shuttling of carbohydrate and amino acids to go to build that endometrial lining.

所以在这阶段，我们会看到大量碳水化合和基酸被运输去构建子宫内膜。

In one of the first examples of drug design, rather than accidental discovery, Farber created two synthetic compounds, aminopterin and amethopterin, later called methotrexate, both analogues of folic acid.

在药早期典范中，而非偶然发现， 法伯创造了两合成化合：基蝶呤和甲蝶呤，后者后来被称为甲蝶呤，它们都是叶酸类似。