Fig. 4From: The amyR-deletion strain of Aspergillus niger CICC2462 is a suitable host strain to express secreted protein with a low background a Growth of A. niger CICC2462 and ∆amyR strains on PDA medium. b Growth of A. niger CICC2462 and ∆amyR strains on PDA medium after 8 days. c Biomass weights of A. niger CICC2462 and ∆amyR grown in fermentation mediumBack to article page