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Fig. 6. Overlapping expression of ehn-3, tra-1 and hnd-1 in
embryonic SGPs. hnd-1, tra-1 and ehn-3 are expressed in the
SGPs at different, but overlapping, times during embryogenesis.
hnd-1::GFP is first detected in SGPs migrating towards germ cells and
disappears about the two-fold stage of embryogenesis. TRA-1 is detected in
newly formed gonadal primordium and may be expressed earlier in migrating SGPs
(M.S. and A.S., unpublished). TRA-1 continues expression in SGPs during
embryogenesis and into the first larval stage, when its level and distribution
are modulated in the two sexes. EHN-3::GFP is expressed exclusively in SGPs
shortly after gonadal primordium forms; it disappears by the threefold stage
of embryogenesis.
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