[Morphological changes in fetal small intestine and pancreas implanted in Fisher and August rats]

Fragments of fetal small intestine of Fischer rats aged 16-20 days were implanted to rats aged 3 months of the same Fischer strain (syngeneic implantation). The morphological changes in the implants were investigated. It has been shown that serious modifications of the implant including the neoplasm formation are possible during the evolution process. After syngeneic implantation of fetal pancreas to Fischer and August rats under identical conditions no malignization of the implants was observed.