Table 1.

Secondary structure of hydrated fibrin clots before and after stretching or compression

Types of secondary structure	Strain∗				Compression
	0	1	2	3	0	Small	Interm.	Large
α-Helices	31%	30%	25%	16%	31%	25%	19%	16%
β-Sheets	37%	40%	46%	52%	37%	44%	48%	51%
Turns, loops, random coils	32%	30%	29%	32%	32%	31%	33%	33%

^∗Strain is defined as stretched length/initial length-1.