FIG. 1.

Histogram showing flow cytometry results from one representative batch of WT NCTC 11047 cells labeled with anti-Aap A-domain antiserum and phycoerythrin-conjugated secondary antibody. The mean percentages (± standard deviations) of Aap-negative Fib⁻ cells (left peak) and Aap-positive Fib⁺ cells (right peak) are shown for three batches of WT NCTC 11047 cells.