title: Expression systems.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000235:genetics / Q000378:metabolism; D001709:Biotechnology; D005658:Fungi / Q000235:genetics; D015870:Gene Expression; D005818:Genetic Engineering; D005822:Genetic Vectors; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000235:genetics; D014780:Viruses / Q000235:genetics
chemical_list: D011994:Recombinant Proteins