What was thought to be a stain turned out to be a human relic that has pushed the boundary of our knowledge.

Blood is a protein, and hydrogen peroxide dissolves it almost immediately. After it is dissolved, it’s time to try a laundry treatment before washing the item.

Jane Dorotik was convicted of her husband's murder but says some so-called bloodstains presented at trial were never tested and others were not blood at all.

Fred L. Borch, “Let the stain of innocent blood be removed from the land”, Army History, No. 86 (Winter 2013), pp. 6-19 ...

PRINCE GEORGE'S COUNTY STAKES Laurel Park, June 28, $125,000 guaranteed, value of race $125,000, 3-year-olds and up, 9 furlongs (turf), 1:45.83 (new course record; previous record, 1:46), course ...