Fig. 2.

Fibres of recombinant spider silk. a Photograph of a wet fibre (scale bar 2 mm), b photograph of a dried fibre (scale bar 2 mm), c light micrograph of a dried fibre (scale bar 100 μm), d scanning electron micrograph of a dried fibre with a fracture surface obtained after rupture during tensile testing (scale bar 10 μm). All fibres were made from the 4RepCT minature spidroin (see Tables 2 and 3)