The P-component of amyloid of human islets of langerhans.

The P-component of amyloid was found in extracts of pancreases with islet amyloidosis. In double immunodiffusion this P-component showed lines of identity with isolated purified human P-component, normal human serum, and an extract of amyloid-rich liver tissue from a patient with primary systemic amyloidosis. The finding supports the theory that the P-component is present in all native human amyloid irrespective of type.