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O.J. Simpson Trial Week at a Glance

May 20, 1995

Developments last week in the O.J. Simpson trial:

MONDAY: Robin Cotton of Cellmark Diagnostics said a test revealed a faint sign of contamination in DNA testing of a blood drop found at Simpson’s estate, but it was so minuscule it did not change test results. She also said her lab made false matches in 1988 and 1989, but since then no false results have cropped up.

TUESDAY: Gary Sims, a scientist with the state Department of Justice crime lab, said blood inside a right-handed glove found on Simpson’s estate matched that of Ronald Goldman, and other blood could be a mixture from Goldman and Nicole Brown Simpson. Sims said he used a microscope to examine a pair of socks found in Simpson’s bedroom and saw 10 blood splatters on one and about 19 on the other, bolstering the prosecution theory that Simpson wore them the night of the killings.

WEDNESDAY: Sims said testing done by his lab showed blood with DNA types matching Simpson, Ms. Simpson and Goldman was found in combinations or separately in stains collected at Simpson’s estate and Simpson’s DNA type was found in blood at the murder scene. Coroner’s reports were unsealed and showed officials could not rule out the possibility that two knives were used in the killings. They also showed that neither victim had any signs of drugs in their systems.

THURSDAY: Sims testified that a study showed sweat, dandruff or spit from lab technicians could not contaminate a DNA sample, but it could be contaminated if two wet blood swatches were touching.

FRIDAY: A prosecutor gave the most graphic details yet of how prosecutors think Simpson killed his ex-wife, saying she was already incapacitated when her assailant put his foot on her back, pulled her head up by the hair and slit her throat. The prosecution wants to show the jury autopsy photos. Defense attorneys argue photos would cause ``revulsion and horror″ in jurors.

During cross-examination designed to bolster the defense frame-up theory, Sims acknowledged the only evidence of Simpson’s DNA on a bloody glove appeared on small ``cutouts″ taken by criminalists before it was sent out for genetic testing. He also said most of the DNA found on the socks at the foot of Simpson’s bed were taken from similar ``cutouts.″

WHAT’S NEXT: Cross-examination of Sims continues on Monday. Following him: Renee Montgomery, a criminalist at the state Department of Justice, and Collin Yamauchi, a criminalist at the Los Angeles Police Department crime lab.

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