Download high resolution image here.
This specimen is slide mounted in
Cargille immersion oil type OVH and 1.18-1.42 NA darkfield illuminated. The image is from a
Helicon Focus processed stack of 199 images with a 0.79 µm step taken with a Nikon CFI Plan 50×/0.9 ∞/- mm oil microscope objective + Nikon 135 mm F2.8 AIS telephoto lens + Nikon D810 camera (magnification 33.75×; technique described
here).