cells in the nucleus tractus solitarius of the medulla oblongata of adult rat brain hybridized to a synthetic oligonucleotide probe ( glp-i oligomer ) corresponding to nucleotide sequences in pancreatic proglucagon mrna encoding glucagon-like peptide i ( glp-i ) , and stained with antisera specific for two antigenic determinants of pancreatic proglucagon , glucagon , and glp-i .
C0175518
the nucleus tractus
C0025148
medulla oblongata