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Fig. 2. Regionalized expression of Nkx2.1, Tbr1, Pax6 and Darpp-32 in the
telencephalon of turtle embryos. Nkx2.1 (A-C,M), Tbr1 (D-F,K), Pax6 (G-I)
and Darpp-32 (J,L). (A-I) Coronal sections of stage 14 turtle embryos
at three distinct rostrocaudal levels. (J-M) Stage 16 (J,K) and stage
18 (L,M) coronal sections. (J,L) Darpp-32-immunoreactive cells form a compact
region in the embryonic striatum (mantle zone of the LGE) and distribute under
the pia in the presumptive lateral cortex (arrows in L). Scale bars: 500
µm. (N) Drawings of the rostrocaudal series of thick (200-300 µm)
coronal sections of a stage 16 turtle telencephalon showing limits of the
presumptive MGE, LGE, LC and DVR (LC/DVR) and DC. The Darpp-32-positive area
is indicated in gray.