🔍 Bronco Accelerator, Brake-Pedal, and Emergency-Brake Single-Swab Test
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🔍 Physical in Bronco Interior Blood

Bronco Accelerator, Brake-Pedal, and Emergency-Brake Single-Swab Test

Phenolphthalein presumptive blood testing performed by Andrea Mazzola on the Bronco's accelerator, brake pedal, and emergency brake with a single swab on June 14. Mazzola testified that she observed no red stains and collected no swatches, while cross-examination challenged the single-swab procedure as improper and contrary to protocol.

Source proceedings (3)

Every proceeding where this item was discussed. Click through to the transcript.

Criminal trial (3)

More in Bronco Interior Blood

Bronco Steering-Wheel Blood Swatch, LAPD Item 29 / Cellmark 19
Blood swatch or stain from the Bronco steering wheel, also described in one source as from the steering column, designated LAPD or People’s item 29 and Cellmark number 19. Sources discussed its transfer and mixed-DNA testing, including reported DQ-Alpha alle…
LAPD Item 31 — Second Bronco Console Blood Swatch
LAPD item 31, the second blood swatch from the Bronco console. PCR testing left extract and one small square; testimony described mixed DQ-Alpha and D1S80 findings, while the certainty and interpretation of faint allele signals were disputed, including Gerde…
LAPD Item 33 — Bronco driver-floorboard carpet section
LAPD Item 33, a carpet section removed from the Bronco's driver-side floorboard. Sources describe a bloodstained area with a possible partial footwear impression, enhancement and photographic examination, PCR testing of one thread, use as a known exemplar, a…
People's 303–305 — Bronco Center-Console Blood Samples
Deliberately grouped blood samples or swatches from three areas of the Bronco center console, identified as People's or Items 303, 304, and 305. Most sources describe collection on August 26, 1994, while testimony also referred to an August 29 recollection. …
Item 293 — Bronco Driver's-Side Carpet Clippings
Item 293, stained and control carpet clippings cut by Gregory Matheson from the Bronco driver's-side floorboard on September 1, 1994. Witnesses described DNA results as consistent with Nicole Brown Simpson and excluding Simpson and Goldman, while Robert Blas…
LAPD Item 25 / DOJ DNA 39 — Bronco driver's-side carpet specimen
LAPD Item 25 from the Bronco driver's-side carpet, described in the sources as carpet fibers or a blood stain and subjected to PCR typing; DOJ DNA 39 was reported as the corresponding laboratory designation.
People's 30 and 31 — Bronco Console Blood Swatches
Blood swatches identified as items 30 and 31 and collected from the Bronco console on June 14, 1994. Testimony addressed their DNA and RFLP results, including prior criticism by Dr. Gerdes and a disputed 1.3 dot for item 31; in closing argument, Barry Scheck…
Item 23 — Bronco Driver's-Door Interior Blood Swatch
LAPD item 23, blood evidence collected from the interior panel of the Bronco driver's door. PCR had been performed and a small extract remained; testimony reported a 1.1, 1.2 typing result as consistent with Simpson and inconsistent with the victims.
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🔬 Bronco Accelerator, Brake-Pedal, and Emergency-Brake Single-Swab Test
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