Abstract
Human pancreatic secretions obtained from patients with pancreatic carcinoma and carcinoma of the ampulla of Vater differ significantly from those obtained from patients without pancreatic disease. Differences were also apparent between secretions from the two types of carcinoma cited above. This was shown by computer analysis of the isoelectric focusing protein patterns from 30 specimens. Average densitometric tracings ± the standard deviation were prepared by the computer for the acidic portion (pH 3–5.7) of the pH 3–10 isoelectric focusing patterns for each group of ten specimens. In this pH region 19 bands were located by the computer. The major bands had isoelectric points of 4.7, 5.0, 5.2, and 5.7.
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