how do i escape a slash character in a WPF binding path, or how to work around?

I'm just learning WPF, and I gragged a table from a datasource onto a window which generated XAML for each column.

Some of those columns had names that caused the following:

<DataGridTextColumn x:Name="_Rev_UnitColumn" Binding="{Binding Path=Rev/Unit}" Header="Rev/Unit" Width="SizeToHeader" />

This causes the column to come up blank (like me).