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Co-recombinamer Silk-ELR fibres obtained by varying feed rate from 0.2 to 0.5 ml/h (A and C) and related distribution diameter histograms (B and D). Voltage and distance were kept respectively at 20 kV and 15 cm Histogram of fibre size as a function of changing flow rate (E). Silk-ELR fibres obtained increasing P-values < 0.001
