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The nanofibres formed in phosphate buffer. (a) Kinetics of absorbance at 350 nm at three concentrations over a period of 72 h and (b) macroscopic visualization of the preparations at the end of the experiment. (c,d) TEM micrographs of the 20-mer nanofibres at 1.7 mM or (e,f) 4.1 mM. Scale bars in c and e are 500 nm; scale bars in d and f are 100 nm.
