In IgA nephropathy, though, there is abnormal glycosylation of these serine and threonine residues, causing them to be galactose-deficient.

而在IgA肾病，有系酸、苏酸残基异常糖基化，导致它们无法连接半乳糖。

Among these are serine and threonine residues which are O-linked glycosylated, meaning they have a sugar molecule, specifically galactose, attached to their oxygen.

其有酸和苏酸残基，是o链糖基化的，这意味着它们的氧上有糖分子，半乳糖居多。

Essential amino acids, or EAAs, are amino acids that our body needs but cannot produce on its own, and there are 9 of them: Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

基本基酸，简称 EAA，是我们身体需要但不能自己产生的基酸，其有 9 种：组酸，异亮酸，亮酸，赖酸，蛋酸，苯丙酸，苏酸，色酸和缬酸。