The investigation of disease in humans has, understandably, been one of the primary focal points in medicine for thousands of years. The image gallery presented in this section attempts to illustrate, through use of the brightfield microscope, many of the pathological conditions that are readily observed in stained human specimens. Each image was chosen for artistic merit, photographic quality, and content. Note that several of the images in this gallery might not depict every aspect of the pathological condition under which they are catalogued.