 They claim the reason Gerdes said that is because earlier he said RFLP results are not susceptible to contamination because the amount of DNA needed for that test is too large but the defense claimed those three exhibits were planted.Now the prosecution had a new RFLP match to Goldman's blood in the Bronco that couldn't be explained by contamination or fraud, so Gerdes made that claim instead.During cross-examination Gerdes admitted having no experience or training in forensic evidence gathering or forensic DNA testing and had never done any of the tests whose results he was criticizing at trial himself or at his lab.