Figure 4
From: Sexual differentiation of the zebra finch song system: potential roles for sex chromosome genes
Darkfield images from in situ hybridization depicting sexually dimorphic mRNA expression for CK306803(Sorting nexin 2) in the zebra finch song system at day 25 post-hatching. Arrows delineate borders of song regions. In area X (or the portion of the medial striatum containing it), males (A) showed higher levels of mRNA expression than did females (B). The increased expression of this gene in males (C) compared to females (D) was also detected in HVC. Scale bar = 200 μm for area X and 100 μm for HVC.