Before revision: In the field of bioengineering, biofunctionalisation (or biofunctionalization) is the modification of a material to have biological compatibility, function , or stimulus, whether permanent or temporary .
After revision: In the field of bioengineering, biofunctionalisation (or biofunctionalization) is the modification of a material to have biological function and/while at the same time be biologically compatibile or stimulus, whether permanent or temporary .