Fig. 5From: A novel methanol-free Pichia pastoris system for recombinant protein expressionExpressional profiles of three heterologous proteins in the Δdak-DHA system. The WT (P AOX1 ) system induced by methanol and the constitutive WT (P GAP ) system serve as controls here. a, b The expressional profiles of amylase (AMY). c, d The expressional profiles of glucose oxidase (GOD). e, f The expressional profiles of hepatitis B small surface antigen (HBsAg)Back to article page