Human LMO4 was highly expressed in the right hemisphere as detected by SAGE, real-time RT-PCR and in situ hybridization. (A) The human LMO4 expression levels in the perisylvian regions measured by SAGE (tag frequencies) in 12 (12 wk), 14 (14 wk) and 19 week (19 wk) brains. (B) The LMO4 expression levels between the left (L) and right (R) hemispheres were verified by real-time RT-PCR in eight human embryonic brains (12-19 weeks). Two data points from duplicated experiments for each sample are illustrated. (C-F) LMO4 expression in coronal sections cut from the frontal (f) to occipital (o) lobes of a human embryonic 12-week brain. The medial-lateral extent of LMO4 expression in the cortical plate between the left (white arrowheads) and right (black arrowheads) hemispheres was defined by a red line connecting the corticostriatal sulcus (cs) and the lateral border of the putamen (arrow). Numbers of sections illustrated in (C) are labeled in sections shown. Human LMO4 was more highly expressed in the cortical plates in the right hemispheres than the left in coronal sections of a 14-week brain (G-J) and 16-week brain (K-L). (H, J and L) are high power views of selected areas in panel G, I and K, respectively. The dorsal (d) and ventral (v) cortex is labeled.