File:Underwear stained with semen.jpg - Wikimedia Commons

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Blood stains on cloth hi-res stock photography and images - Alamy

History Archives - Page 2 of 4 - The Atavist Magazine

Woman Wet Panties: Over 73 Royalty-Free Licensable Stock Vectors & Vector Art

New Research on Evaluating Semen Stains Using Forensic Imaging Technology - ForenScope

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Opinion There Are Many Man-Made Objects. The Rape Kit Is Not One of Them. - The New York Times

File:Sperm.jpg - Wikipedia