in situ hybridization with 35s-labeled single stranded rna probes was used on sections from formaldehyde-fixed and paraffin-embedded tissue specimens to provide semiquantitative data on the occurrence of transthyretin ( ttr ) -mrna in human liver , choroid plexus and pancreatic islets as well as in 15 endocrine tumours of the pancreas and gut .
C0022131
pancreatic islets
C0030274
pancreas