25.8 MB (1.4 MB compressed)
2100 x 4299 pixels
17.8 x 36.3 cm ⏐ 7.0 x 14.3 in (300dpi)
SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY
Balladyna ciliate protozoan. Light micrograph of a ciliate protozoan (Balladyna sp.). This tiny single-celled organism is found in freshwater. It feeds on bacteria and decaying organic matter, which it filters through membranelles in its primitive mouth, known as a buccal cavity (top left). The membranelles, rows of fused cilia (short microscopic hairs), are also used for locomotion.
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