There really is such a thing as tick spit – that is, the saliva of a tick. And there's something about it that might help fight heart disease and stroke.
The link comes from a protein found in the spit of ixodes (ik-SO-deez) ticks, which are also known as blacklegged ticks, or deer ticks.
These kinds of ticks tear their way into skin and feed on their host's blood for several days. They damage small blood vessels, which would normally trigger the body to start a process called coagulation – or blood clotting.