These investigations showed that the ELISA detection of the B. subtilis L-form was selective, rather than specific. This is not unusual for L-form bacteria, which have often been shown to have common antigenic determinants with
Petiole samples were taken at t0, 1 and 3 d. Stolon samples were tested after 7 d. A positive sample was determined by comparison with similar material injected with 5% (w/v) mannitol