Fig. 1 Dendogram of genotypic strains of  Staphylococcus epidermidis  after fragmentation with restriction enzyme SmaI and computer analysis of PFGE. Samples 11 and 12: blood and CVC tip, respectively, from patient 1. Samples 2 and 7: blood and CVC tip, respectively, from patient 2. Samples 4 and 9: blood and CVC tip, respectively, from patient 3. Sample 1: blood sample from patient 4. Samples: 3, 6 and 10: blood, nasal mucosa and CVC tip, respectively, from patient 5. Samples: 8 and 5: blood sample and CVC tip, respectively, from patient 6.