Gamma globulin and Plasma protein

Gamma globulin noun - A plasma protein containing the immunoglobulins that are responsible for immune responses.

Plasma protein and gamma globulin are semantically related. In some cases you can use "Plasma protein" instead a noun phrase "Gamma globulin".

Plasma protein noun - Any of the proteins in blood plasma.

Gamma globulin and plasma protein are semantically related. Sometimes you can replace phrase "Gamma globulin" with "Plasma protein", this phrases are similar.