a, Whole-genome bisulfite sequencing comparison of
sorted AP and MD populations for relative methylation percentage. Data are
presented as median values with first and third quartiles. Whiskers
represent minimum and maximums. Sequencing was performed on 2 separate runs
of n=2,000 and n=6,000 cells each for both populations. b,
ORF1p expression during apoptotic wave. ORF1p is expressed in small clusters
of germ cells at E13.5 (white arrowhead) and progresses toward homogenous
expression by E15.5. Scale bar = 100μm. c, ORF1p and
cleaved PARP staining in E13.5 wild type sections. Scale bar = 25μm.
d, ORF1p-negative germ cell clusters in E15.5
Bax−/− compared to
Bax+/−. Arrowheads denote
ORF1p-negative cells. Insets: Higher-magnification image of ORF1p-negative
cluster compared to ORF1p-positive neighboring germ cells. Scale bar =
50μm.