Fig. 1.

A: quasi-static stress-strain curve from a strip of degassed canine lung parenchymal tissue stretched uni-axially between an actuator and a force transducer. B: stress relaxation profiles from the same tissue strip following sudden 10% increases in strain from three different starting lengths. Note that the slopes are all essentially identical in the log-log plot despite the highly nonlinear stress-strain behavior. [Reproduced with kind permission from Springer Science+Business Media; Ref. 6.]