Micro World
How small is Euplotes?
Euplotes has a body length of about 100 µm.
What is measured: ciliate protozoan with fused cirri
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How big is that, really?
- About 87% of the width of a human egg cell
- About 1.4× the width of a human hair
- About 5× the width of a cloud droplet
- About 5 would fit across a grain of sand
- About 13× the width of a red blood cell
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Facts about Euplotes
Euplotes uses fused bundles of cilia called cirri to crawl along surfaces like tiny legs.
Source: Protist Information Server, Euplotes
Micro World
Compared with other microscopic things
| Name | Size | Compared with Euplotes |
|---|---|---|
| Ascaris lumbricoides Egg | 60 µm | 0.6× |
| Human Cheek Epithelial Cell | 60 µm | 0.6× |
| Pine Pollen Grain | 70 µm | 0.7× |
| Human Adipocyte | 100 µm | same size |
| Euplotes | 100 µm | this page |
| Human Cardiomyocyte | 100 µm | same size |
| Human Smooth Muscle Cell | 100 µm | same size |
| Onion Epidermal Cell | 100 µm | same size |
| Didinium | 150 µm | 1.5× |
| Coscinodiscus Diatom | 150 µm | 1.5× |
Test your sense of scale
Which is bigger: Euplotes or Pine Pollen Grain?
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