title: [A lesson on the purity of pharmaceutical products derived from biotechnology: eosinophilia-myalgia syndrome].
mesh_terms: D016603:Eosinophilia-Myalgia Syndrome / Q000503:physiopathology*; D006801:Humans; D014364:Tryptophan / Q000009:adverse effects* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D014364:Tryptophan