as antibiotic protection was gradually withdrawn , gram-negative organisms became a part of the mixed microbial flora of the conduit contents , and some of the potentially pathogenic organisms of this group ( e.g. , escherichia spp. , proteus spp. , pseudomonas spp. , etc . ) were isolated from patients with pyelonephritis that appeared to come from the ileal conduit .
C0029235
organisms
C0450254
pathogenic organisms