A medical sample?

Not quite! Its actually a paper and plastic CD slip case photographed at 40X. Because of the minimal depth of field when shotting thru a microscope I couldnt get both the surface, with the bubbles on, and the fibrous part below both in focus, so I took two photographs at different focus points and combined them as layers in Photoshop. The two layers overlapped slightly due to focus shift but I left the borders in.

Canon A470 on the microscope
Optics, 10X eyepiece and 4X Meiji flat field objective.