 International trade experts have objected to the way in which bodies for commercial display are imported, because the way their categorization codes (as "art collections") do not require Centers for Disease Control stamps or death certificates, both of which are required for medical cadavers.In most countries plastinated human specimens are classified under Customs Classification Code 97050000.48 "items in anatomical collections".This customs code encompasses "zoological, botanical, mineralogical or anatomical collections or items in such collections."