Here’s what you’ll learn when you read this story:A new study analyzes the way that bloodstains behave on cotton fabrics in the hopes of furthering forensic analysis. Plain-woven cotton makes it easier to estimate the velocity of blood splatter. Related Story The Blood of the Crab“When blood strikes fabric, it leaves a stain,” Tiegang Fang, one of the authors of the study, said in a statement. By analyzing the images, the team identified patterns in the bloodstains correlating to the velocity of the blood splatter. We found that the more fingers a bloodstain has, the faster the blood was moving when it struck the fabric.