Assertion: low salt fibril | /r/CapableOf | exhibit no twist
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text: This hypothesis also explains the fact that the low-salt fibrils exhibit no twist, whilst the high-salt fibrils are composed of two entwined twisting protofibrils (as also observed with cryo-electron microscopy83), as both charge84 and size85 are known to influence the twisting properties of protofibrils.