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Vannucchi MG.Vannucchi MG.Microsc Res Tech. 1999 Dec 1;47(5):325-35. doi: 10.1002/(SICI)1097-0029(19991201)47:5<325::AID-JEMT4>3.0.CO;2-C.Microsc Res Tech. 1999.PMID: 10602292