The amino acids have been examined in 273 specimens of urine from 119 infants, aged
from a few hours to 8 months. sixty of these specimens have been examined for sugars. In …

All urine excreted by 11 healthy premature infants was collected for 8 weeks. The 24-h urine
collection on the 4th day of life was taken as representative of first week urine. In subsequent …

All the urine excreted by normal male infants during the first 24 h of their lives, in which they
received no protein, was collected. The urine of 5 other babies who were a few hours old at …

Urine from a premature infant at 38 days and 18 weeks old, a 25-day-old normal infant and
an adult were analysed for amino-acids by ion exchange chromatography. Expressed as a …

Glutamic acid, serine, glycine, threonine, alanine, glutamine, lysine and tyrosine are
excreted in the urine by normal infants. The urinary excretion of glycine and alanine …

Using the Dowex 50 column chromatographic technique of Moore and Stein, studies have
been made of free amino acid excretion in 12 infants and two older children in order to …

Clearances of total and individual amino acids and of endogenous creatinine were
measured in 2 groups of premature infants (less than 17 and more than 27 days of age), in …

The higher rates of excretion in the urine of the premature infant of both total free alpha
amino nitrogen and of individual amino acids as compared to the full-term infant, the older …

A simplified method of ion‐exchange chromatography of essential amino acids on small
amounts of human plasma is described. The precision of the instrument and the …

In the course of studies of the urinary excre-tion of creatinine by premature infants, a number
of the infants fed cow's milk were found to excrete a substance which gave the Waffe …