Lancet
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Lancet
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In 33 patients studied with endocrine neoplasms of the pancreas more than half the tumours contained pancreatic polypeptide (P. P.) producing cells, and a high radioimmunoassayable concentration of P. P. was found in the tumour extracts. ⋯ P. cells. Measurements of plasma P. P. levels should be a new aid to diagnosis of pancreatic tumours.