Organe in tkiva, tj. normalno in tretirano kožo, jetra, ledvica, vranico, moda, nadledvične žleze, srce in tarčne organe (to je tiste organe, ki kažejo makroskopske poškodbe ali spremembe v velikosti), je treba shraniti v ustreznem mediju za morebitno histopatološko preiskavo v prihodnosti.
Organs and tissues, i.e. normal and treated skin, liver, kidney, spleen, testes, adrenals, heart, and target organs (that is those organs showing gross lesions or changes in size), should be preserved in a suitable medium for possible future histopathological examination.