system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5, what's the clear sticky fluid that comes out after someone squeezes a cut like a pimple?
gpt
Plasma (the watery part of blood, without any blood cells) and/or interstitial fluid.

Blood is made of a bunch of stuff in a solution of water. There’s big stuff (cells, platelets, big proteins) and small stuff (dissolved salts, other ions, small molecules.)

If you cut your skin, but don’t make a hole into a big capillary or other blood vessel, the water and small stuff can escape, but big stuff stays inside. Kinda like a pasta strainer, holding in the pasta but draining the water. The red color of blood comes from red blood cells, so plasma is clear.

There’s also interstitial fluid. The water in your body is in 3 main areas: inside cells, inside your blood, and… everywhere else. The third part is called interstitial fluid.