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Fig. 7. Analysis of cortical differentiation in the right gonad of chick embryos
electroporated with RCAS-Pitx2c at HH15-16 and screened at E12 (HH38).
(Top row) Transverse sections along the A-P axis of one right gonad containing
germ cells clusters (DMRT1-positive) surrounded by fibronectin (Fn). (Bottom
row) Left-like cortex areas are positive for ER
plus LHX9 and contain
germ cells positive for DMRT1 plus
H2AX. The HA antibody staining
(right) shows widespread expression of ectopic PITX2 found in extensively
infected right gonads. The line marks left-like cortex areas. Scale bars: 50
µm.