FILE PHOTO: Signage is seen at the Merck & Co.

Merck to build out immunology presence with $11 billion Prometheus deal

FILE PHOTO: Signage is seen at the Merck & Co. headquarters in Kenilworth, New Jersey

FILE PHOTO: Signage is seen at the Merck & Co. headquarters in Kenilworth, New Jersey, U.S., November 13, 2021. REUTERS/Andrew Kelly