 A different photograph of the gate on June 13 shows the blood was already there and the claim of some of Simpson's reference blood missing from the vial was refuted during rebuttal by the nurse who drew it who clarified he believes he only drew the amount the records show was used for testing.The defense claimed that blood found on a sock in Simpson's bed was planted there by Detective Vannatter.As evidence, they offered that Vannatter did have possession of Nicole Brown's autopsy blood briefly prior to booking it into evidence and the blood contained EDTA, a preservative found in the reference vial of Nicole Brown autopsy blood.