what did schwann discover
His many contributions to biology include the development of cell theory, the discovery of Schwann cells in the peripheral nervous system, the discovery and study of pepsin, the discovery of the organic nature of yeast, and the invention of the term metabolism.
Schwann: Discovered that all animals are made up of cells1. Virchow: Discovered that cells only come from other cells1. His statement was later debunked. Read more: http://wiki.answers.com/Q/What_did_Schleiden_Schwann_and_Virchow_contribute_to_cell_theory#ixzz1zjk4oxTk.