The hanging drop tissue culture is a technique utilized in
In the 1910s, Alexis Carrel, the French surgeon and biologist, concluded that cells are intrinsically immortal. His claim was based on chick-heart tissue cultures in his laboratory that seemed to be able to proliferate forever. Carrel’s ideas about cellular
In “The Outgrowth of the Nerve Fiber as a Mode of Protoplasmic Movement,” Ross Granville Harrison explores the growth of nerve fibers in vitro. The purpose of this experiment was to test two possible hypotheses for the growth of nerve fibers.