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"Some other JAK inhibitors are already approved by the Food and Drug Administration to treat acute and chronic graft-versus-host disease after it develops," said first author Ramzi Abboud, MD, an assistant professor of medicine in the Division of Oncology at WashU Medicine.

"It’s the worst moment that the country passed through," said Abboud, who has no connection with Hezbollah.

But for some, including Beirut's Governor Marwan Abboud, Israel’s recent escalation already feels worse.

So it was little surprise to see a continuously replenishing crowd of customers lining up at Al Aqsa Sweets, Nablus’ most popular dessert maker, and watching Khaled Abboud slice pieces of knafeh with practiced aplomb.

“When an agency declares that everything on the market is illegal, it puts itself in the position of being completely unable to enforce its own regulations,” said Tony Abboud, of the Vapor Technology Association.