91.   Packages containing toxic substances found in Britain, including one sent to Prime Minister Tony Blair, official says.

92.   Preservationists have said the dust may contain toxic substances that could damage the church.

93.   Plutonium is a substance so toxic it can cause cancer if inhaled even in small amounts.

94.   A commonly consumed product, they were warned in an ad, had been found to contain frightening toxic substances.

95.   A leading Sudanese member of Parliament has urged the government to be wary of American products, saying they could be laced with toxic substances to harm Sudanese people.

96.   A soldier in combat can easily see if a suspicious cloud contains anthrax spores, sarin nerve gas or other toxic substances programmed into a computer.

97.   Activated microglia produced toxic substances that are also typically secreted in inflammatory reactions.

98.   According to Russian officials, the toxic substances were obtained from military facilities.

99.   An FBI chemist testified that ricin is the third most toxic substance known, after plutonium and botulism, and twice as lethal as the deadliest cobra venom.

100.   An Israeli government official, speaking on condition of anonymity, said one of the Jerusalem bombs contained a toxic substance along with the explosives.