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Expression of XND-1 during embryogenesis is limited to the P lineage. Embryos are oriented anterior to the left. XND-1 is marked in magenta, PGL-1 in white and DAPI in green. Scale bar: 5 µm. XND-1 is undetectable in the germline blastomere of<24-cell stage. At ∼32-cell stage, expression can be seen in the cytoplasm and nucleus of P4 and continues in the P4 daughters, Z2 and Z3, where it localizes to the nucleus and is associated with chromosomes.
