Fig. 6. Convergent differential regulation of SLIT1 in the RA analog and human LMC.
(A) In situ hybridization of SLIT1 in the RA analog and arcopallium of vocal-learning and vocal-nonlearning avian species. Shown are frontal sections; dorsal is up, right is midline. White, SLIT1 mRNA detected by 35S riboprobe in dark-field view; red, cresyl violet stain of brain cells. (B) Cortical surface map of SLIT1 relative gene expression levels (Z-score) in the human brain measured by microarrays (http://human.brain-map.org/static/brainexplorer). Red, higher expression; blue, lower expression. Two example persons are shown (left hemisphere), one with both dLMC/LSC and vLMC. Dorsal is up, front is left.