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(A) Synaptonemal complex spreads of the blue tit immunolabeled with antibodies against SYCP3 (red) and centromere proteins CREST (green). The GRC is indicated with the arrow and also shown in the box at the top right corner without CREST signal. (B) Micronucleus containing the eliminated GRC in the blue tit. Micronuclei are immunostained with H3K9me3 antibody (pink), and DNA is counterstained with DAPI (blue). Scale bars represent 10 µm.
