摘要 |
A genetic expression system is described which allows regulatable expression of proteins with a specific type of promoter on a plasmid. This system is applicable to the expression in yeast of, e.g., the Epstein-Barr virus membrane antigen, glycoproteins which exert a toxic effect on the cells, e.g., Epstein-Barr virus membrane antigen, or whose expression is negatively selected. |