1990 Photomicrography Competition

Thin slab of Brazilian agate

John I. Koivula

Affiliation
Gemological Institute of America
Carlsbad, California, USA
Technique
Brightfield
Magnification
12x

Stress fibers in smooth muscle cells

Peter Dartsch

Affiliation
University of Tuebingen
Tübingen, Germany
Technique
Fluorescence
Magnification
125x

Double exposure of rat hypothalamus showing locus of the mammalian biological clock

Dr. Wutian Wu

Affiliation
Eastern Virginia Medical School
Department of Anatomy and Neurobiology
Norfolk, Virginia, USA
Technique
Brightfield and Darkfield
Magnification
10x