Protozoa

Mr. Edwin Lee

2011

Carrollton, Texas, USA

Specimen: Paramecia contractile vacuoles, which regulate water pressure within the protozoan's body

Technique: Phase contrast illumination

Mr. Ralph Grimm

2013

Jimboomba Queensland, Australia

Specimen: Paramecium, showing contractile vacuole and ciliary motion.

Technique: Differential interference contrast, 350x-1000x