Expression systems are genetic constructs (a gene encoded by DNA) that are designed to produce a protein, or an RNA (ribonucleic acid), either inside or outside a cell. Expression systems are used ...

Gerry Baker is Editor at Large of The Wall Street Journal. His weekly column for the editorial page, “Free Expression,” appears in The Wall Street Journal each Tuesday. Mr. Baker is also host ...

and Pete Aguilar (Calif.) — who have criticized Republicans for occasional outbursts during Democratic speeches, and watched with glum expressions as Green was escorted from the room.

With a little practice, the language won't be "all Greek" during your next visit. Helen Iatrou is a travel journalist and guidebook author from Australia who has lived in Greece for almost three ...