In article <4bmmig$f34 at bull.hkstar.net> Leung chi man <lcm at hkstar.com> writes:
In my laboratory, I recently found that ampicillin cannot induce
b-lactamase production in-vitro, but ampicillin should be a strong
induce. Therefor I don't know what and Why this happen. Any body can
explan the detail to me
...
Just what amp gene are you trying to induce? Some of the amp
promoters are inducible by antibiotics (E. Cloacae ampC I believe is
one). Joe Random Amp on a plasmid probably does not have this
capability.
nathan
