Table 2.

Correlation of plasmid content with infectivity in Bb B31

Clone†	Plasmid content*
	Infectivity associated		Present in all clones												Not infectivity associated
	lp25	lp28-1	cp26	cp32-1	cp32-2,7	cp32-4	cp32-6	cp32-8	cp32-9	lp17	lp28-3	lp36	lp38	lp54	cp9	cp32-3	lp21	lp28-2	lp28-4	lp56
High-infectivity phenotype
5A1	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−
5A3	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−	+	−	+	−
5A4	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
5A6	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−	+	+	+	−	+
5A9	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−
5A11	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
5A15	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−	+	−	+	+	+
5A16	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−
5A18	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−	−
5A19	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
Intermediate-infectivity phenotype
5A2	+	−	+	+	+	+	+	+	+	+	+	+	+	+	−	+	+	+	+	−
5A8	+	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
Low-infectivity phenotype
5A5	−	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
5A7	−	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
5A10	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−
5A12	−	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−	+
5A13	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+
5A14	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	−
5A17	−	−	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+	+

^*As determined by PCR amplification (Fig. 1) and confirmed by Southern hybridization for lp25 and lp28-1 (Fig. 2). 

^†Infectivity phenotype determined by needle inoculation of C3H/HeN mice (Table 1).