if a given concentration of 5-doxylstearic acid sampled only the plasma membrane of tb or cho cells , we would expect to see a linewidth corresponding to a 12-20-fold greater local concentration of 5-doxylstearic acid than was observed , since the plasma membranes of cho and tb cells represent only 5-8 percent of the total cellular lipid .
C0007603
plasma membranes
C0007634
cellular