FREE AMINO ACIDS IN BLOOD. VI 433 
ean . 278° ; 283 
ae a - f 

k 
| 
—- a e ; ee — * 
Figs. 278-287. Extracts of 0.3 ml of packed erythrocytes fiom subject E. Rob. following ingestion 
of glutamine. The samples were removed at the times indicated for corresponding plasma samples 
° . . r ~ . . © P 
in the legend for Figs. 268-277. For abbreviations see p. 369. 
the left of glutamic acid rose and fell along with glutamine. Figs. 296-303 show the 
findings with erythrocytes from A. Knu. The samples were extremely uniform. No chan- 
ges of amino acid levels were produced from ingestion of glutamine or withdrawal of 
blood samples. The high degree of reproducibility of the methods employed is demon- 
strated. Note that subjects E. Rob. and A. Knu. showed grossly different responses; in 
the former, erythrocytes showed increases of both glutamine and alanine while in the 
latter no changes were observed. A marked difference in erythrocyte free amino acid 
References p. 447/448 
