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James Frederic Danielli FRS[1] (1911–1984) was an English biologist.

He was famous for research on the structure and the permeability of cell membranes, developing a physical-chemical model in collaboration with the physiologist Hugh Davson. This became known as the Davson-Danielli[2] or "protein sandwich" model. He also carried out studies on the chemistry of enzymes and proteins and tried to construct an artificial "cell".


  1. ^ Stein, W. D. (1986). "James Frederic Danielli. 13 November 1911-22 April 1984". Biographical Memoirs of Fellows of the Royal Society. 32: 116. doi:10.1098/rsbm.1986.0005. JSTOR 770110.
  2. ^ Danielli, J. F.; Davson, H. (1935). "A contribution to the theory of permeability of thin films". Journal of Cellular and Comparative Physiology. 5 (4): 495. doi:10.1002/jcp.1030050409.