CR is strongly expressed in the developing paralemniscal pathway. At E14.5, weak CR can be observed in the POm, lateral to the parafascicular thalamic nucleus (A, arrows). At E16.5, the expression of CR in the POm becomes stronger (B, arrows). After birth, CR is continuously expressed in the POm at least through P15 (C-F, arrows). Strong expression of CR is also observed in Sp5i, which is the relay nucleus of the paralemniscal pathway, from E14.5 to P15 (G-L, arrows). Scale bar: 100?m.