Fig. 3. Relationship between maximum tetanic force and cross-sectional area (CSA) of intact fibres in red (filled symbols) and white (open symbols) muscle preparations. Damaged fibres were removed as described in the text before CSA was measured. The slopes of the lines are the mean of the force/CSA values, 142.4±10.3 kN m^-2 (N=35) for red fibres and 289.2±8.4 kN m^-2 (means ± S.E.M., N=25) for white fibres.