Promoterless Description:
To act as a negative control the promoterless Pleiades expression vector pEMS1307
(EGFP reporter flanked by full frt sites) was introduced by homologous recombination
as single copy insertion into the Hprt1b-m3 locus in the X Chromosome of mouse embryonic
stem cells (ESCs) mEMS1218. The resulting PCR validated four ESC lines, mEMS2076,
mEMS2081, mEMS2087, and mEMS2088. Chimeras were generated using mEMS2076. No mouse
strains have yet been derived or images produced for this negative control.
In a parallel experiment, also to generate a negative control, the promoterless Pleiades
expression vector pEMS1306 (EGFP reporter flanked by minimal frt sites) was also
produced.
Note: two CAG positive controls (pEMS1157 & pEMS1277) have also been generated.
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