title: Effect of changed cultivation conditions on the morphology of Aspergillus niger and on citric acid biosynthesis in laboratory cultivation.
mesh_terms: D001234:Aspergillus niger / Q000378:metabolism* / Q000648:ultrastructure; D002951:Citrates / Q000096:biosynthesis*; D019343:Citric Acid; D011523:Protoplasts / Q000378:metabolism; D013997:Time Factors
chemical_list: D002951:Citrates; D019343:Citric Acid