Download high resolution image here.
This image is from a
CombineZP processed stack of 255 images with a 0.9 µm step taken with a
Mitutoyo BD Plan APO 50×/0.55 ∞/0 mm microscope objective + Nikon 200 mm F4 AIS telephoto lens + Nikon D810 camera (magnification 50×; technique described
here).