The influence of SlyASTy on the expression of clyASTy could not be directly studied in S. Typhi , because a non-virulent aroA mutant of strain Ty2 , was hence rather unsuitable as host strain
The influence of SlyASTy on the expression of clyASTy could not be directly studied in S. Typhi , because a non-virulent aroA mutant of strain Ty2 , grew poorly on standard agar plates