% M1S Gradient Switching basic protocol setflow X 2.00 setflow Y 2.00 % Establish Gradient 1 % 0 fluorescence open B2 % 50 fluorescence open A1 % 100 fluorescence open C1 %create stable gradient for one hour wait 60 % switch to Gradient 2 close B2 close A1 close C1 % 100 fluorescence open C2 % 50 fluorescence open A2 % 0 fluorescence open B1 %create stable gradient for one hour wait 60 close C2 close A2 close B1 end