Biotech pipeline by acquisition

The combination of American Cyanamid and American Home Products, beyond creating the world's fourth largest drug company, also will bring Immunex Corp. and Genetics Institute Inc. under the same umbrella.

American Home, which already owns more than 65 percent of Cambridge, Mass.-based GENIZ, will assume Cyanamid's majority stake in IMNX after the pharma merger, which Cyanamid agreed to last week...