in contrast , mutants deficient in production of ptx alone ( bp357 , ld50 = 5 x 10 ( 6 ) ) , ac and hly ( bp348 , ld50 greater than 3 x 10 ( 7 ) ) , or all known toxins and virulence factors ( bp347 , ld50 greater than 3 x 10 ( 7 ) ) were severely impaired in their ability to cause a lethal infection .
C0040549
toxins
C1136170
virulence factors