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~-135 
fiber rs 367 fibers 554 504 is dssiss 637 as fibers 
lig. 2 D is plotted to show the averages of the number of fibers for the four 
rats of each group, at the ages studied. JF is plotted to show the same averages 
of numbers in relation to the averages of body weight at the same ages. 
140 
