Birch leaf, the picture is 0,36 mm x 0,24 mm. You can see single cells some stomata and what I belive is a mold infection.
During stacking it was clear that the orange coloured area that I belive is mold is a large "hill". To show this I made a 3D modell - klick on the picture.
I got a question about how to make the depth map in Zerene. This is a DMap option but I think that it is only avilable in the Prosumer Edition or the Professional Edition.