The invention relates to a combination, comprising a first component and a second component which are spatially separate from one another, the first component containing cross-linkable albumin and the second component containing a polymer, non-terminal monomer units of the polymer having at least partially, in particular only partially, one albumin-crosslinking group. The invention further relates to a reaction product obtained by means of the combination, a medical product, a pharmaceutical agent for novel therapies, a kit, a discharge device, and a functionalized hyaluronic acid.