This is what's called a "specimen lot" — a large mason jar holding smaller vials of parasitic worms gathered by a researcher in 1927. The Smithsonian collection has more than 120,000 specimen lots.
Former President Jimmy Carter delivers a lecture on the eradication of the Guinea worm at London's House of Lords on Feb. 3. The lecture title: "Final Days of the Fiery Serpent: Guinea Worm Eradication."
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A long legacy in global health: Former President Jimmy Carter has worked to end neglected diseases since 1982. Here he sits with former South African President Nelson Mandela at a ceremony in Soweto, celebrating a new AIDS project in 2002.
On a 2007 visit to Savelugu Hospital in Ghana, President Jimmy Carter asks a group of children if they've had Guinea worm. A raised hand is a yes.
Louise Gubb/Courtesy of the Carter Center
Nakal Longolio Acii, 9, had to stay several weeks at a Guinea worm clinic in Eastern Equatoria, South Sudan, while health workers coaxed the parasite out of her leg.
Louise Gubb/Courtesy of The Carter Center