1993 Photomicrography Competition

Hexagonal growth depression on the surface of a crystal of yttrium aluminate

John I. Koivula

Affiliation
Gemological Institute of America
Carlsbad, California, USA
Technique
Differential Interference Contrast
Magnification
40x

Intestinal lining of a soft shell turtle

Patricia Barber

Affiliation
Shriners Hospital, Tampa Unit
Tampa, Florida, USA
Technique
Brightfield
Magnification
250x

Triple exposure of melanoma and carcinoma cell culture

Gail MacKenzie

Affiliation
ImmunoGen, Inc.
Cambridge, Massachusetts, USA
Technique
Fluorescence
Magnification
125x