Immunoglobulin G and Immune serum globulin

Immunoglobulin G noun - One of the five major classes of immunoglobulins; the main antibody defense against bacteria.

Immune serum globulin and immunoglobulin G are semantically related. In some cases you can use "Immune serum globulin" instead a noun phrase "Immunoglobulin G".

Immune serum globulin noun - A class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response.

Immunoglobulin G and immune serum globulin are semantically related. Sometimes you can replace phrase "Immunoglobulin G" with "Immune serum globulin", this phrases are similar.