the presence or absence of R-factor plasmids where appropriate (i.e. ampicillin resistance in strains TA98, TA100, and TA97a or TA97, WP2 uvrA and WP2 uvrA (pKM101), and ampicillin + tetracycline resistance in strain TA 102);
navzočnost ali odsotnost R-plazmidov, kadar je to primerno (tj. odpornost proti ampicilinu pri sevih TA98, TA100 in TA97a ali TA97, WP2 uvrA in WP2 uvrA (pKM101), in odpornost proti ampicilinu + tetraciklinu pri sevu TA 102);