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The AP test is presumptive, and a positive result should always be followed by a PSA test for confirmation of the presence of semen.

If the stain is still fresh, a specific odor associated with seminal fluid might still be detectable.

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RECENT ADVANCEMENT RESEARCH PAPERS TO READ FOR THE TOPIC• On washable fabrics As with all stains the faster you treat the stain, the better the outcome, and for most fabrics washing immediately with a biological detergent will be enough to remove the semen and prevent staining.

2 Canine Unit, Netherlands National Police Agency, Waterweg 35, 8071RR Nunspeet, The Netherlands.

In the absence of full male ejaculation, what is the forensic significance of this fluid? Semen also contains other liquids, known as seminal plasma, which help to keep the sperm cells viable.

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Brenner is also a published sci-fi author.

How would this charge appear on my credit card billing statement? This method could be used in much the same way as the PSA test.