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【多选题】
人体不能合成或合成速度远不适应机体的需要,必须由食物蛋白供给, 这些氨基酸称为必需氨基酸。下列属于必需氨基酸的有:A.
缬氨酸
B.
丙氨酸
C.
赖氨酸
D.
丝氨酸
E.
异亮氨酸
F.
精氨酸
G.
色氨酸
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