How Small Is Onion Epidermal Cell? 100 µm Compared to Scale

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Onion epidermal cells are a classic microscope specimen because their thin, clear skin peels easily.

Source: Biology lab manuals: onion epidermis microscopy

Micro World

Name	Size	Compared with Onion Epidermal Cell
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	same size
Human Cardiomyocyte	100 µm	same size
Human Smooth Muscle Cell	100 µm	same size
Onion Epidermal Cell	100 µm	this page
Didinium	150 µm	1.5×
Coscinodiscus Diatom	150 µm	1.5×

Test your sense of scale

Which is bigger: Onion Epidermal Cell or Pine Pollen Grain?

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