Bad hair day? Grease factories are at work in your skin. Three sebaceous glands surround the hair follicle and will empty their greasy globules (white) onto the hair – the round pink thing in the centre of the follicle.

Visualised using light microscopy by A/Prof. Paul Rigby, University of Western Australia.

Size: the biggest sebaceous gland is 225 micrometres wide.

Looking at tissue stained like this is the basis of a lot of clinical histology, where diseases are diagnosed and students learn what the microscopic structures in tissues look like.


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