| Fc fragment | <immunology> The constant region on an immunoglobulin molecule. The area that is exactly the same on all antibodies. The region is found on the heavy chains and is not involved in binding antigens. (09 Oct 1997) |
|---|---|
| Klenow fragment | <molecular biology> Larger part of the bacterial DNA polymerase I (76 kD) that remains after treatment with subtilisin, retains some but not all exonuclease and polymerase activity. (18 Nov 1997) |
| fragment | A small part broken from a larger entity. (05 Mar 2000) |
| fragment reaction | A reaction used to assay the activity of peptidyl transferase. (05 Mar 2000) |