Aj. Clark et al., CHROMOSOMAL POSITION EFFECTS AND THE MODULATION OF TRANSGENE EXPRESSION, Reproduction, fertility and development, 6(5), 1994, pp. 589-598
Chromosomal position effects can influence strongly the transcription
of foreign genes in transgenic animals. This results in low frequencie
s and levels of gene expression and, in some cases, in aberrant patter
ns of expression. Strategies for overcoming these effects are describe
d with particular reference to their application in embryonic stem cel
ls.