Antibodies against the common polysaccharide and protein protective antigens of Pseudomonas aeruginosa in normal blood donors.

Screening of normal plasma obtained from 172 blood donors from the Helsinki area and from 46 blood donors from the Moscow area was performed in order to reveal 'natural' antibodies to the common polysaccharide (rhamnan) and protein antigens of P. aeruginosa. Antibodies were detected by ELISA.