Plant and animal cells, 1839.
3 2 c m
actual image size: 32cm x 24cm

Plant and animal cells, 1839.

Schwann, Theodor

© Science Museum / Science & Society Picture Library


Drawing from the book 'Microscopical Investigations' by Theodor Schwann (1810-1882), published in 1839. Schwann's most renowned work was on cell theory. He discovered the 'Schwann cells' and showed that an egg is a single cell until fertilised when it evolves into a complex organism. In 'Microscopical Investigations' he claimed that plants and animals are comprised of many cells, and that cells have a life of their own but this life is subordinated to that of the organism. The cell theory was pivotal in 19th century biomedicine.



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