KEVIN MACKENZIE / UNIVERSITY OF ABERDEEN / SCIENCE PHOTO LIBRARY KEVIN MACKENZIE / UNIVERSITY OF ABERDEEN / SCIENCE PHOTO LIBRARY
Microsphere calibration beads. Fluorescent light micrograph of multi-size constellation-stained microspheres, used as a test sample to calibrate microscopes used in fluorescent microscopy. This image was obtained using five different filters, with phase effects causing the halos seen around some of the beads. Magnification: x225 when printed at 10 centimetres across.
Model release not required. Property release not required.