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Fig. 3. Cell cycle distribution of migrating PGCs. (A) PGC number
with average and standard deviation (top), ratio of PGCs with BrdU (middle)
and with cyclin B1-strong-positivity (bottom) over the course of development
in mice. After E8.25 (dotted line), randomly chosen cells were analyzed for
BrdU incorporation and cyclin B1 immunostaining. (B) Representative
images of BrdU incorporation (red) into PGCs (green) at E7.25, E7.75, E8.5 and
E10.5 as indicated. (C) Representative images of cyclin B1
immunoreactivity (red, left column) in PGCs (green, right) at E7.75, E8.25,
E9.25 and E9.75 as indicated. (D) FACS analysis of the cell cycle
distribution of PGCs (green) and embryonic somatic cells (pink) during the
course of development. Red arrowheads denote the G1 and G2 peaks. Scale bars:
10 µm in B,C.