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CHICAGO — Roughly 400 living organ donors and recipients gathered in Millennium Park on Saturday to try to break the Guinness World Record for largest gathering of living organ donors.

On hand was Chicago Police Supt. Eddie Johnson, who received a kidney from his son last year. Also present was Illinois Secretary of State Jesse White, who recently spearheaded a program that allows 16 and 17 year olds to sign up to be organ donors.

WGN’s Dana Rebik has more.