<MenuItem x:Name="menuHightlightRBC" Header="_Highlight All Erythrocytes" IsCheckable="True" InputGestureText="Ctrl+H" />
</MenuItem>
<MenuItem x:Name="menuHelp" Header="_Help">
<MenuItem x:Name="menuHightlightRBC" Header="_Highlight All Erythrocytes" IsCheckable="True" InputGestureText="Ctrl+H" />
</MenuItem>
<MenuItem x:Name="menuHelp" Header="_Help">