Previous studies using fluorescent transgenic zebrafish bearing KRAS(G12D)-induced RMS yielded similar insights [100]: GFP-labeled MYF5high zebrafish tumor cells (expressing markers of satellite and early muscle progenitor cells) and mCherry-labeled MYF4high zebrafish tumor cells (expressing high levels of mature muscle markers) were isolated by fluorescence-activated cell sorting and transplanted. Here, KRAS is linked to neoplasm.