Ricin chain A. This vaccination is effective for several months due to the body's production of antibodies to the foreign protein. In 1978 Bulgarian defector Vladimir Kostov survived a ricin attack similar to the one on Georgi Markov, probably due to his body's production of antibodies. When a ricin-laced pellet was removed from the small of his back it was found that some of the original wax coating was still attached. For this reason only small amounts of ricin had leaked out of the pellet, producing some symptoms but allowing his body to develop immunity to further poisoning. The seeds of
Waterloo Covered Bridge Waterloo Covered Bridge The Waterloo Covered Bridge carries Newmarket Road over the Warner River near the Waterloo Falls in Warner, New Hampshire. The Town lattice truss bridge was built in 1859-60, replacing an earlier span at the same location, and is one of New Hampshire's few surviving 19th-century covered bridges. The bridge was listed on the National Register of Historic Places in 1976, and included in the Waterloo Historic District in 2003. The Waterloo Covered Bridge is located in western Warner, spanning the Warner River in a roughly northeast-southwest orientation. The bridge is a single span with a span length