electron microscopical studies of cells exposed at 0 degrees c to a toxin-horseradish peroxidase ( hrp ) conjugate , or to unconjugated toxin followed by horse antitoxin antibodies and then protein g-gold , revealed that the shiga toxin binding sites were randomly distributed on the cell surface , without any preference to , for example , coated pits .
C0007634
cells
C0699040
cell surface