Fig. 2From: Recombinant expression of insoluble enzymes in Escherichia coli: a systematic review of experimental design and its manufacturing implicationsStudy selection process. A Identification of total search results on NCBI PubMed, Clarivate Web of Science, and Google Scholar for key search terms. B Screening of total search results to narrow focus to publications with a focus on prokaryotic enzymes and plasmid-based expression methods. C Further screening based on metadata parametersBack to article page