Converse of object

• produce: Two years later - in early 1997 - UNSCOM discovered evidence that Iraq had produced ricin.

• make: How you could be exposed to ricin It would take a deliberate act to make ricin and use it to poison people.

• spread: They were alleged to have been involved in a plot to spread ricin, a deadly toxin.

• have: Removing your clothing: Quickly take off clothing that may have ricin on it.

• continue: The existence of ricin continued to be proclaimed for over two years.

• say: The Senate Majority Leader said ricin can be inhaled, ingested or injected.

Adjective modifier

• deadly: The group has told recent visitors to its enclave that it holds stocks of the deadly chemical agents ricin, cyanide gas and aflatoxin.

• biological: The residue from the castor bean pulp can be used in the production of the biological agent ricin " .

• lethal: There is now word that someone tried to send a letter to the White House laced with the lethal poison ricin.

Modifies a noun

• poisoning: Initial symptoms of ricin poisoning by inhalation may occur within 8 hours of exposure.

• plot: Remember the " ricin plot " that sprang into life six weeks ago?

• ring: Before the ricin ring trial started, I phoned him in Arizona.

• case: The North London ` ` ricin case ' ' .

• poison: A small amount of the material recovered from the Wood Green premises has tested positive for the presence of ricin poison.

• attack: Peter Hain predicted a " ricin attack " , whatever that is, on the House of Commons.

Noun used with modifier

• poison: The umbrella had been rigged to inject a poison ricin pellet under Markov's skin.

• toxin: Senate Majority Leader Bill Frist announced progress in decontamination efforts at the Dirksen Senate office building, where the toxin ricin was found Monday.

• agent: The residue from the castor bean pulp can be used in the production of the biological agent ricin " .