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(a) FE predicted tensile forces versus displacement for the TC of a spike leg of SARS-Cov-2. Both present simulation results of beam model and shell model are included, which are in the range of a few pN. Note that the displacement is not normalized (initial length = 7 nm). (b) Some available testing and MD data on other TC (17,60, 61, 62) as a comparison. Note that these data are normalized by a TC’s initial length. To see this figure in color, go online.
