maost edasikantud seedunud toidu ja sellega segunenud kõhunäärmenõre, sapi ja soolenõre poolt moodustatud mass, milles sisaldub ka mikroorganisme (eriti soole lõpposas) ja nende ainevahetusprodukte
Cloacal swabs (or faeces) and tracheal swabs from sick birds; faeces or intestinal contents, brain tissue, trachea, lungs, liver, spleen and other obviously affected organs from recently dead birds.
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