Abstract
Seventeen amino acids in the serum were determined on patients with gastric cancer and gastric ulcer, and on normal individuals by the chromatographic procedure. In the serum of patients with gastric cancer, the amounts of serine, praline, glycine, alanine, valine, leucine and arginine were lower and those of glutamic acid and methionine higher than in normal individuals. Serum amino acids levels in postoperative gastric cancer and gastric ulcer cases were also studied. The number of unknown peaks of ninhydrin positive compounds other than amino acids increased in the serum of patients with gastric cancer. The results were statistically analysed.
