P161 CEEFAX 161 Sat 9 Apr 00:45/24    -n2n1   -/.%/.%/,  WORLD    US CONCERN OVER BIOLOGICAL WEAPONS   The US has said it is concerned   Russia may not have fully stopped   its work on biological weapons.     Part of the concern has been blamed   on a "biological infrastructure"   with no apparent commercial purpose   found by US and British ixpjrts.     But the Washington Post also said a   Russian scientist who defected to   the US last year gave an account of   secret research into germ warfare.     President Yeltsin admitted Russia   violated a 1972 treaty banning   biological arms at least until 1990  --,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,. Next News Main News Home News Top Sport