MeSH definition : The domains of the immunoglobulin molecules that are invariable in their amino acid
sequence within any class or subclass of immunoglobulin. They confer biological as
well as structural functions to immunoglobulins. One each on both the light chains
and the heavy chains comprises the C-terminus half of the IMMUNOGLOBULIN FAB FRAGMENT
and two or three of them make up the rest of the heavy chains (all of the IMMUNOGLOBULIN
FC FRAGMENT);
The domains of the immunoglobulin molecules that are invariable in their amino acid
sequence within any class or subclass of immunoglobulin. They confer biological as
well as structural functions to immunoglobulins. One each on both the light chains
and the heavy chains comprises the C-terminus half of the IMMUNOGLOBULIN FAB FRAGMENT
and two or three of them make up the rest of the heavy chains (all of the IMMUNOGLOBULIN
FC FRAGMENT)