Mondo Knows Facts

The human body is composed of roughly thirty-seven trillion cells

Trillions of specialized biological cells collaborate to maintain life

Scientific estimates place the total cell count of an adult human body at approximately 30 to 37 trillion cells. Red blood cells make up the vast majority by count, followed by endothelial cells, glial cells, and muscular tissue cells working in concert.

Epithelial Cells Human Inside of Mouth, Stained Microscope Slide 2
Iceclanl ยท CC BY-SA 3.0 ยท licence ยท source

Where this comes from

NIH

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Tags: cells, biology, body

The human body is composed of roughly thirty-seven trillion cells: the short answers

Where does this come from, and can I check it?
Trillions of specialized biological cells collaborate to maintain life. The figure is taken from NIH, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?
Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?
The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.