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Person, swab and criminal investigation at crime scene, blood sample and discovery of dna marker. Professional, homicide evidence and hazmat suit for safety, forensics and search for clues in case
Murder or robbery case: African American policeman finds fingerprints on cup belonging to crime victim using brush and magnetic powder. Male forensic scientist works with evidence at crime scene.
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Microscopic close view of high vaginal swab Gram stain smear, 40x. diagnosis of Bacterial vaginosis (BV).

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