MATLAB: Cell Data, How to access it

accessarraycelldata

Hi,
So I have data in this format. I want to access the data in each TD however don't know how to access it using commands. Could anyone point me in the right direction?
Thanks,
Chris
TD(:,:,1) =
[512x2 double]
[ 1]
TD(:,:,2) =
[512x2 double]
[ 2]
TD(:,:,3) =
[512x2 double]
[ 3]