One name that jumps out from the list above: Philip Morris Companies Inc, one of the world's largest manufacturers of cigarettes and tobacco products. Philipmorris.com states: The Philip Morris name has long been associated with high quality tobacco products and globally recognized cigarette brands.
A type of gene expression control in bacteria. Transcription of a gene under this type of control is induced only when a repressor protein present in the cell is inactivated.
1 Eukaryotic genes also have repressor proteins to inhibit expression of a gene. 2  Eukaryotic repressors can cause inhibition of gene expression by blocking the binding of activators to their control elements or to components of the transcription machinery or by turning off transcription even in the presence of activators. Eukaryotic genes also have repressor proteins to inhibit expression of a gene. 2  Eukaryotic repressors can cause inhibition of gene expression by blocking the binding of activators to their control elements or to components of the transcription machinery or by turning off transcription even in the presence of activators.