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. 2016 Nov 7;6:36473. doi: 10.1038/srep36473

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Copyright © 2016, The Author(s)

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(a) Repeat amino acid sequences of N. clavipes MaSp 1 (major ampullate spidroin 1)⁶ and recombinant protein¹². Dashes indicate gaps inserted into alignments of ensemble repeat units for natural and recombinant spidorins. (b) Post-stretching effect on crystalline orientation, crystallinity (left), and birefringence index (right). (c) Cross section SEM images of as-spun WS (left) and WS-PSD (right) fibre.