Prothero, J A model of clonal attenuation. [electronic resource] - Proceedings of the National Academy of Sciences of the United States of America Jan 1981 - 333-7 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0027-8424 Standard No.: 10.1073/pnas.78.1.333 doi Subjects--Topical Terms: Cell DifferentiationCell DivisionClone CellsFibroblastsModels, Biological