Relax your eyes until you see a fourth image appear. Depending on whether  you  cross or separate your eyes, one of the two images in the middle will be the correct 3D image and the other middle image will be the opposite direction 3D.

60µ section of cerebellum, golgi silver stain.

10x objective. (Photomicrography by Dr. Gary L. Greenberg)

3D Transmitted Light
Transmitted light photomicrograph of a purkinje cell in a 50µ thick preparation of cerebellum, visualized with a Golgi type silver stain. Mag. 150x. (Photomicrography by Dr. Gary L. Greenberg)

Mouse brain
Stained with antibody to GFAP (glial fibrillary acidic protein) to demonstrate astrocytes. Section is 60um thick. 40x objective. (Courtesy of Geoff McAuliffe, Ph.D. University of Medicine and Dentistry of New Jersey, Department of Neuroscience and Cell Biology. Photomicrography by Dr. Gary L. Greenberg)

3D Transmitted Light
Transmitted light image of motor neurons in a 50µ thick preparation of spinal cord; Golgi type silver stain. Mag. 100x