The photo shows the same case presented in Image:Endometriosis, abdominal wall.jpg.

For the photo, I moved in a little closer and immersed the specimen in a shallow pan of water. Whether it's better to shoot specimens dry or immersed is a matter of taste. I prefer the more natural look of immersed specimens, but others like the sharpness of dry surfaces. If you do shoot specimens dry, be sure to sop as much moisture off the surface as possible. Otherwise, distracting highlights will ruin the picture.

Both photos were taken with a Nikon D100 digital SLR camera through a Sigma 50mm macro lens. The camera was set for manual focus, incandescent light balance, and aperture priority exposure mode at f/8. Both shots looked a little dark on the computer monitor, so I expanded the dynamic range in Photoshop using the Levels command. The only other digital editing was slight cropping of the top photo and downsampling to proper size (650 pixels, greatest linear dimension) for screen display. There was no sharpening or color correction. The imaged was saved in JPEG format with the quality setting "8 (High)". The black background is a piece of velvet.