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Fig. 12. Material properties of the bulbi of yellowfin and bigeye tuna. (A)
Stress-strain curves. (B) Modulus-strain curves. The following rectangular
tissue samples were stretched using a micromanipulator: YF, yellowfin tuna;
BE, bigeye tuna; ML, segment of the middle layer; ILE, segment of longitudinal
element; OL, segment of the outer layer; circ., stretched circumferentially;
long., stretched longitudinally. The asterisk represents a tissue sample that
was stretched as a loop using the custom-built stretching machine.