Representative raw AFM images of the dried ruptured fibrils in their original Bruker nanoscope file format. The images were acquired using the Peak Force Quantitative Nanomechanical Mapping mode and can be opened using the freeware Gwyddion ( The first channel is the height, the second channel is the peak force error, the third channel is the DMT modulus, the fourth channel is the logarithm of the DMT modulus, the fifth channel is the adhesion, the sixth channel is the deformation and the seventh channel is the dissipation ( Only channels 1 and 2 are useful, as the probes used for these measurements were not calibrated to extract quantitative mechanical data. Each file is named using the first three columns of File 1, for example: animal 1, common digital extensor tendon, fibril 1 is 1e1.