Formalin-fixed suspensions of R. solanacearum biovar 2 (strain NCPPB 4156 = PD 2762 = CFBP 3857) at 106 cells per ml as positive controls for serological tests.
Formaliinikiinnitetyt suspensiot (106 solua/ml) R. solanacearum -bakteerin biovarista 2 (kanta NCPPB 4156 = PD 2762 = CFBP 3857) positiivisiksi kontrolleiksi serologisiin testeihin.