I found a kind of Xanthomonas naturally resistance to Ampicillin, what is the meaning ?

When I want to transform a plasmid into three Xanthomonas translucens pv. undulosa, found there is one WT resistance to Ampicillin, I tried purify plasmid and transform into E.coil, but I got...

06 June 2019 5,319 2 View