over the cell densities used for transport experiments the 3t3 cell goes from exponential growth to density dependent inhibition of growth ( 4 x 10 ( 4 ) to 4 x 10 ( 5 ) cell cm-2 ) whereas the sv40 3t3 maintains exponential or near exponential growth ( 4 x 10 ( 4 ) to 1 x 10 ( 6 ) cell cm-2 ) .
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the
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