using in situ hybridization analysis combined with rna blots and a met-enkephalin-specific radioimmunoassay , we showed that ( i ) pea mrna levels in embryonic and newborn mesenchymal derivative tissues were as high as in the developing brain , ( ii ) pea mrna concentrations in these tissues dropped to undetectable levels shortly after birth , and ( iii ) this mrna was translated and processed differentially among different mesenchymal tissues , yielding a tissue-specific pattern of pea-derived peptides .
C0006104
brain
C0086045
concentrations