The brain is only the size of a pea, but looks like a normal brain and has multiple cell types and all the regions of a normal brain - "equal in maturity to that of a five-week-old fetus," according to the report.

They say it could be used as a more effective and more ethical way to test the effects of drug treatments on the brain.

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Former Fulton County election worker Ruby Freeman talks to her daughter, Wandrea ArShaye "Shaye" Moss, a former Georgia election worker, after she testified before the U.S. House Select Committee at its fourth hearing on its Jan. 6 investigation on Capitol Hill in Washington, D.C., on Tuesday, June 21, 2022. (Yuri Gripas/Abaca Press/TNS)

Credit: TNS