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Force at all lattice spacings and sarcomere lengths. Both lattice spacing and sarcomere length tune force, as shown by the dependence of force on lattice spacing at all sarcomere lengths and on sarcomere length at all lattice spacings. An isovolumetric path through the parameters of lattice spacing and sarcomere length results in an LT curve of nearly maximal steepness. Peak force is seen at 17.5 nm lattice spacing and 2.3 µm sarcomere length. (Online version in colour.)
