title: Author response.
authors.forename: Naomi P
authors.initials: NP
authors.lastname: Visanji
authors.forename: Anthony E
authors.initials: AE
authors.lastname: Lang
authors.forename: Lili-Naz
authors.initials: LN
authors.lastname: Hazrai
mesh_terms: D001706:Biopsy; D003106:Colon / Q000378:metabolism*; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000378:metabolism*; D008297:Male; D010300:Parkinson Disease / Q000175:diagnosis*; D051844:alpha-Synuclein / Q000378:metabolism*
chemical_list: D051844:alpha-Synuclein