van Ham, SMvan Alphen, LMooi, FRPutten, JPM2025-03-132025-03-131993https://rivm.openrepository.com/handle/10029/634669Phase variation of H. influenzae fimbriae: transcriptional control of two divergent genes through a variable combined promoter region.ArticleCell 1993; 73:1187-962025-03-13