Fig. 7.
Transient expression of 5-HT1B receptor mRNAs in the mouse somatosensory system. Expression pattern is illustrated at P7 (A, C) and P15 (D, F) in the cerebral cortex (A, D) and the thalamus (C, F). Nissl-counterstained sections are shown for the cortex to illustrate the layer IV in S1 cortex where the recordings were done (B, E). In S1 cortex, the specific hybridization signal is limited to layer V at P7 and P15, although the relative extent of the expression appears to be broader at P7 than at P15 (the position of the cortical layers is indicated by roman numbers). In the thalamus, a strong hybridization signal is visible in the dLGN and the VB at P7 but is absent at P15. Scale bar, 450 μm.