Fig. 4. MURF2 and sacrcomeric actin are localized in different cell regions. Cells stained with anti-MURF2 (green) and with anti-sarcomeric actin (red) antibodies did not show significant colocalisation, neither after 48 hours (A) nor after 120 hours of differentiation (B). When cross-striated actin begins to be organised (B), MURF2 decorated microtubules align laterally to these structures (arrowheads in B).