Coimmunostaining with anti-GFP (green) and anti-actinin (red) antibodies in the infarcted myocardium of G-CSF(+) mice receiving transplants of single CD34^-c-kit⁺Sca-1⁺lineage^- side-population cells. Nuclei are stained blue. See the related article by Kawada et al, beginning on page 3581.
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