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Mehmet Ali Orman; Pınar Çalık; Tunçer H. Özdamar. (2009). The influence of carbon sources on recombinant-human- growth-hormone production by <em>Pichia pastoris</em> is dependent on phenotype: a comparison of <em>Mut</em>s and <em>Mut</em>+ strains. , 52(3), 245–0. doi:10.1042/ba20080057 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research