Serum

[Sarah]

The clear yellowish liquid obtained upon separating whole blood into its solid and liquid components after it has been allowed to clot.

[gusepinax]

Blood serum from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual, called antiserum.

[Donald Trump]

A watery fluid from animal tissue, especially one that moistens the surface of serous membranes or that is exuded by such membranes when they become inflamed, such as in edema or a blister.

[Carmellabita]

The watery portion of certain animal fluids, as blood, milk, etc; whey.

[Tjalfdyed 0]

a thin watery fluid, containing more or less albumin, secreted by the serous membranes of the body, such as the pericardium and peritoneum

[Taksi154r]

the fluid in which the blood corpuscles float or are suspended.