Fig. 3.

Cntnap2 transcript distribution marks song nuclei in the adult male zebra finch. In anterior forebrain, enriched Cntnap2 signals were detected in both LMAN and MMAN of hemicoronal (B) sections of male brain. A similar enrichment could not be detected in hemicoronal sections of female brain (D). Low Cntnap2 levels in male area X (B) stood in contrast to high transcript levels in surrounding St and uniform levels in the corresponding area of female St (D). In posterior brain, strong signals were detected in male (F) but not female (H) RA. Outside the song circuitry, robust Cntnap2 levels were detected in HA, N and St (B,D) in anterior brain, as well as in the NC and the subpallial areas of TeO, Cb and IM/IPc in posterior brain (F,H) of both sexes. For abbreviations, see Table 1. Scale bars = 1 mm.