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1.
Fig. 4.

Fig. 4. From: Sexually dimorphic expression of trkB, a Z-linked gene, in early posthatch zebra finch brain.

Western blot analysis of trkB expression in whole brain at P6 in six males (m) and females (f). The expression in males, relative to tubulin loading control, was on average 25% higher than in females (P < 0.05).

Xuqi Chen, et al. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7730-7735.
2.
Fig. 1.

Fig. 1. From: Sexually dimorphic expression of trkB, a Z-linked gene, in early posthatch zebra finch brain.

Fluorescent in situ hybridization of BAC probe ZF085A14, encoding the trkB gene, to zebra finch metaphase chromosomes. The probe hybridized to the single Z chromosome of the female (Right, ZW) and to both Z chromosomes of the male (Left, ZZ). (Scale bar, 10 μm.)

Xuqi Chen, et al. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7730-7735.
3.
Fig. 3.

Fig. 3. From: Sexually dimorphic expression of trkB, a Z-linked gene, in early posthatch zebra finch brain.

Histograms of Z scores of the level of expression of trkB mRNA, relative to GAPDH, determined by quantitative RT-PCR. Telencephalic RNA was measured at P1, P6, P10, and adulthood. Whole-brain RNA was measured at P1 and in adults. The mean level of expression was greater in males than females at all ages but was statistically significant (asterisks) in the telencephalon at P6 and in adults, and in adult whole brain.

Xuqi Chen, et al. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7730-7735.
4.
Fig. 6.

Fig. 6. From: Sexually dimorphic expression of trkB, a Z-linked gene, in early posthatch zebra finch brain.

Expression of trkB mRNA in situ in HVC of a P6 male and female, based on digitized images of emulsion-dipped sections. Labeling of the trkB antisense riboprobe appears black. Adjacent sections were hybridized with antisense probes for zRalDH, a marker for HVC (arrows). The zRalDH labeling unequivocally identifies the location of HVC. Cb, cerebellum; N, nidopallium; Th, thalamus. Labeling of HVC by trkB is clearly seen. (Scale bar, 1 mm.)

Xuqi Chen, et al. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7730-7735.
5.
Fig. 2.

Fig. 2. From: Sexually dimorphic expression of trkB, a Z-linked gene, in early posthatch zebra finch brain.

Northern blot analysis of trkB mRNA expression at P6. (Left) Part of Northern blot of male (M) and female (F) P6 telencephalic samples. A greater expression can be seen consistently in males at the 8-kb band and smaller bands. (Right) Graph showing quantification of expression of the 8-kb trkB band relative to GAPDH. trkB mRNA expression dropped significantly between P6 and P10. The male–female difference was statistically significant at P2 and P6 (P < 0.05, asterisks).

Xuqi Chen, et al. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7730-7735.
6.
Fig. 5.

Fig. 5. From: Sexually dimorphic expression of trkB, a Z-linked gene, in early posthatch zebra finch brain.

Photomicrographs of autoradiograms of representative frontal sections at three levels of the brain of a P6 male (Left) and a P6 female (Right) showing in situ hybridization of the antisense trkB probe. The middle of the sections are approximately at AP levels A2.6 (Top), A1.8, and 0.0 (Bottom) of the atlas of Stokes et al. (84). The telencephalon was labeled more than other brain regions. These sections were sectioned and processed in parallel, and hybridized on the same slide. trkB mRNA was expressed higher in the male than in the female. Hp, hippocampus; M, mesopallium; N, nidopallium; OM, occipitomesencephalic tract; S, septum; StL, lateral striatum; StM, medial striatum; TeO, optic tectum; Th, thalamus; V, third ventricle. (Scale bar, 1 mm.)

Xuqi Chen, et al. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7730-7735.

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