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Fig. 7. Mesoderm is required in the Q lineage-independent O/P specification pathway
in H. robusta (Austin). (A) Ipsilateral o/p bandlets in stage 8
embryo in which both the M and Q lineages were ablated. Both bandlets exhibit
the O-type cleavage pattern, with the small o.p nuclei marked by arrows. The
presumptive p bandlet has transfated to the O-type cleavage pattern, and is
labeled o'. (B) Ipsilateral o/p bandlets in stage 8 embryo in which only
the M lineage was ablated. The presumptive o bandlet expresses the O-type
cleavage pattern, while the presumptive p bandlet expresses the P-type
cleavage pattern. See Fig. 2
for orientation. Scale bar: 30 µm.
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