The federal approval includes nine lines that had never before been eligible for federal funding and four long-used lines derived by researchers at the University of Wisconsin, known as H7, H9, H13 and H14. H9 is the most widely used.
“Its a big day for researchers in the United States,” said Erik Forsberg, executive director of the WiCell Research Institute in Madison, Wis., which applied for the approval. “The fact that these lines will now be listed on the registry and available for research will ease the mind of many scientists.”