Modificerede eller manipulerede proteiner kodet af rekombinant DNA og egnet til en række formål, herunder modifikation af gensekvenser, masseproteinproduktion og fremstilling af kommercielle produkter.
Determined by its ability to chemoattract human blood monocytes. Chemotactic activity was observed at a concentration of 2.5 ug/ml with a peak response obtained (at 250 ug/ml)