A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is
Comparison of two functioning human pancreatic islet cell tumors with adjacent uninvolved islets enabled identification of various islet cell types on the basis of their fine structure. The evidence suggests that mature secretory neoplastic beta cells arise by differentiation from immature budding ducts in a germinal region of the tumors, through a process resembling that of islet differentiation in embryos. This work was undertaken because biopsy tissue presented an opportunity to study thepmid:13967310 pmcid:PMC1949691 fatcat:3kdr2oip7ndcpllurbhiz3vzlm