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Fig. 3. Association of trxG or PcG proteins with the bxd ME in
individual cells correlates with an activated or repressed white
reporter gene, respectively. (A) Pol II phoshorylated at Ser5 is
associated with the site of insertion of the N construct (arrowheads) in the
same Drosophila salivary gland cells as Trx (left), but not Pc
(right). (B) H3-meK27 is not associated with the site of insertion of
the N construct in the same cells as Trx.