Fig. 1

Number of RAPD patterns detected when testing 5, 10, 15 or 20 E. coli colonies per patient sample. Enteric samples were tested from E. coli bacteraemia (ECB) patients (n = 5, receiving antibiotics), and non-antibiotic-exposed inpatient controls (n = 5, no infection, not receiving antibiotics). Different numbers of colonies were evaluated, as indicated and the number of distinct RAPD patterns enumerated. Plot shows median and interquartile range