 The peptide’s effects were observed through BrdU labeling and cell phenotyping that provided evidence for the migration of neuroblasts through the rostral migratory stream to the olfactory bulb (confirming previous experiments) and to the striatum.Such data supports the author's hypothesis in that neurogenesis would be stimulated through introduction of such a peptide.As NPY is a 36 amino acid peptide associated with many physiological and pathological conditions, it has multiple receptors that are broadly expressed in the developing and mature rodent brain.