Table 1.

Force for actin and actin–Tm as a function of myosin surface density

Myosin, μg/ml	Force, (pN/μm)*
	Actin	Actin-Tm
25	2.9  ±  0.9	3.8  ±  0.8
50	5.6  ±  0.8	12.2  ±  1.7
250	12.4  ±  1.0	14.5  ±  2.3

^*Force is the slope and the standard error of the estimate for the linear regressions in Fig. 3.