Changes

Immune globulin is a [[protein]] found in the [[blood]] that fights [[infection]].  It is also known as [[gamma globulin]].

Immune globulin is a [[protein]] found in the [[blood]] that fights [[infection]].  It is also known as [[gamma globulin]].<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#i</ref>