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. Author manuscript; available in PMC: 2015 Jun 18.
Published in final edited form as: Nature. 2014 Nov 5;516(7531):391–394. doi: 10.1038/nature13819

Extended Data Figure 1.

Extended Data Figure 1

Two separable ventral cell populations give rise to the murine genital tubercle. a,b) Injection into the most distal ventral part of the embryo, the tailbud, marks cells posterior/ventral to the phallic part of the urethra (a, arrow; n=7), whereas injection closer to the allantois, into the infra-umbilical mesenchyme, labels cells anterior/dorsal to the phallic part of the urethra (b, arrow; n=4). Cells lining the peritoneal cavity are also being marked (arrowhead), due to accidental piercing of the coelom. Scale bars, 200 μm. gt: genital tubercle, ur: urethra.