Prosecutors, with the help of D-N-A expert Robin Cotton, continued their case O-J Simpson by linking five crime scene blood spots with the former American football star.
Dr. Cotton and the prosecution claim four droplets leading away from the crime scene and one near the bodies of the victims match Simpson's genetic material.
Starting with the first blood drop lying near the bodies of Ronald Goldman and Nicole Brown Simpson prosecutors suggested today that the trail leads to O-J Simpson.
They are arguing that the blood drops which appear to match OJ Simpson's genetic make-up are incontrovertible proof that the former baseball star was guilty of a brutal double murder - of his wife and her friend, Goldman.
Thursday's evidence may have appeared somewhat esoteric to the U-S audience who have remained absorbed by the courtroom drama.
A D-N-A expert talked the court through the minutiae genetic matchings.
Clarke: "Do those results include or exclude Mr Goldman and Nicole Brown?"
Cotton: "They exclude Mr Goldman and Nicole Brown."
Clarke: "What about Mr Simpson?"
Cotton: "They do not exclude him."
Clarke: "And I believe that you described that there was a match between Mr Simpson and this stain at a number of genetic markers. Is that right?"
Cotton: "That is correct."
Clarke: "Or probes as you've used the term."
Cotton: "That's right."
Clarke: "How many probes did Mr Simpson match the 52 Bundy stain at?"
SUPER CAPTION:George Clarke, Prosecutor and Dr. Robin Cotton, DNA Expert.
With no murder weapon or eyewitness this is the proof prosecutors have longed for - specific scientific evidence that the prosecutor claims pins Simpson down to the scene of the crime.
In a break from D-N-A descriptions, Simpson left the chair that he has been confined to throughout the lengthy trial, and viewed the so-called "Autorads" that depict his genetic markers.
Ito then sent for the jurors so they could witness the X-rays.
Prosecutors then moved on from the Bundy crime scene to Simpson's house, Rockingham, where they say they found more blood on Simpson's driveway and inside his mansion.
Clarke: "Other than the fact that with regard to the Rockingham Driveway stain number 7 and the fact that no C dot was observed, are the types you actually detected the same in both number 7 and number 12, the Rockingham Foyer stain, as far as the PCR results themselves."
Cotton: "Yes the types that we saw are the same."
Clarke: "And they both include Mr Simpson but exclude both Ronald Goldman or Nicole Brown?"
SUPER CAPTION: George Clarke, Prosecutor and Dr. Robin Cotton, DNA Expert.
Cotton also officially revealed test results of blood under Nicole Simpson's fingernails that genetically match her blood.
Cotton's testimony suggests, in effect, that she was the only person in the world whose blood could have been on a pair of socks found in Simpson's bedroom the evening after the murders.