322 



H. H. ROBERTS, R. .1. HHll IKN. AND H. J. MCCAKTIIY 



<t>T = ^ — C 



(2) 



(3) 



0£ = ^!i -oxpi-tr/A-H} 



NL E{R + iV) exp [- (r/A>] - TAT exp [-iR/N)r] \ ,,, 

 •^-^ = r t^ E(R + AO - TA^ / ^'^^ 



and 



0/e = </>7' — <I>E — 4>.v 



(5) 



The dei'ivation of these equations and the restrictive conditions 

 governing their use are given in (Britten and iVIcCarthy, 19621. 



It can be seen from Eq. (1) that the ultimate value of (/> for any 



0.0001 



TIME-r 

 (Defined by growth Q = OQe' ) 



P'la. 17. I>oK-log plot of tlip time counso of the radioactivity (expressed as <p) of 

 the ribonuclooprotein fractions resolved by DEAE chromato^;raphy. Data from 

 Fig. 13 and Fig. 1 of McCarthy el. al. (1962). The four curves have been calculated 

 from Eqs. (2), (3), (4), and (5) for the ca.se E = 0.027, N = 0.068, R = 0.905. 



