From: Altering the selection capabilities of common cloning vectors via restriction enzyme mediated gene disruption
Viable transformant count (cfu/ml) on medium
Transformant
LB
LB + Amp
LB + Tet
pUC19
2.22 × 109
2.25 × 109
0
pUC19:tetA
4.2 × 109
2.85 × 109
pET23a
2.39 × 109
pET23a:tetA
2.03 × 109
2.11 × 109