The man accused of killing the son of Minnesota Vikings running back Adrian Peterson can use his own medical experts during the trial according to a judge.

According to the Associated Press, "Judge Bradley Zell on Monday granted the request by attorneys for Joseph Patterson, over the objections of prosecutors who say the testimony will be 'junk science.'"

Patterson has pleaded not guilty in the death of Tyrese Robert Ruffin, the son of his girlfriend and a former girlfriend of Peterson.

Doctor's determined that the injuries that Ruffin suffered in the October 2013 incident could not have been the result of choking on fruit snack, as the defense claims.

Patterson faces life in prison if convicted. Opening statements begin Tuesday.