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. 2001 Feb 15;29(4):e23. doi: 10.1093/nar/29.4.e23

Table 2. Frequency of stable clones expressing the tet-transactivator.

Cell line
pUHD172-1neo
prTE4d38-neo
HeLa 14/18 10/16
COS-7 0/14 14/25
NIH 3T3 0/12 6/16
SaOS-2 0/15 14/22

The ratios in the table indicate the number of expression-positive clones/total number of clones analyzed.