1. transiently transfected pfos-cat construct. changes in regions of active transcription
2. As expected from previous results men- (72 73). In the case of the c-fos gene it has
3. tioned above 3-AB reproducibly sup- been demonstrated that a transient gradi
4. pressed the UVB induction of the ent of increased DNaseI sensitivity extends
5. endogenous c-fos gene in the stably and hundreds of basepairs upstream and down