Who first observed and thus hypothesized that new cells are formed from previously existing living cell? Biology, The Cell Leave a comment 0 Views A.Theodor Schwann and Schleiden B.Rudolph Virchows C.Louis Pasteur D.Both b and c Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related 2019-01-29 Pakquiz Share Facebook Twitter