1989 Photomicrography Competition

Dolomite crystals (red) replacing calcite micrite (yellow)

Jay Gregg

Affiliation
University of Missouri
Rolla, Missouri, USA
Technique

Cathodoluminescence

Magnification
25x

Immunoreactive neurons within the organum vasculosum of the lamina terminalis

Gloria Hoffman

Affiliation
University of Pittsburgh
Department of Physiology
Pittsburgh, Pennsylvania, USA
Technique
Darkfield
Magnification
20x

Rostellar hook arrangement of a tapeworm

Kenneth L. Tiekotter

Affiliation
Good Samaritan Hospital and Medical Center
Portland, Oregon, USA
Technique
Polarized Light
Magnification
30x