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XRD images of as-poured spider silk films MaSp1 (A), post-pour stretched 2.5× its original length after an 80/20 methanol/water bath (B), 1D radial integration profile of the whole 2D pattern of B (C), and the 1D azimuthal intensity profile of B (D). The double arrow in A and B represents the direction of film stretch alignment which is parallel to the beamstop shadow (blue).
