human
I'm trying to find out the difference between a syringe and a needle.
assistant
A syringe is used for delivering fluids into the body, such as medicine or vaccines, while a needle is used for taking samples from the body, such as blood tests. Syringes are usually made of plastic and have a plunger that moves back and forth within the barrel. Needles are typically made of metal and can be used with a variety of medical procedures, including injections, blood draws, and intravenous therapy.