Methods Phenylalanine(phe) concentration in dried-blood spot specimens on filter paper was detected by fluorometric method.

方法用荧光法测定新生儿滤纸干血片上的苯丙氨酸浓度以筛查苯丙酮尿症。

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METHODS The CCK-4 peptides were condensed from N-protected Trp, met, Asp and C-protected Phe by Mixture anhydrides method, resulting in total yield of 38.5%.

方法以N -保护的色氨酸、甲硫氨酸、天门冬氨酸和C -保护的苯丙氨酸为原料，采用混合酸酐法合成了CCK四肽，总收率38.5%。

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