novel dendritic polymers are employed to clinically seal or repair wounds and treat traumatized or degenerative tissue . novel crosslinkable biopolymers such as dendritic macromolecules are used in vitro , in vivo and in situ to treat ophthalmological , orthopaedic , cardiovascular , plastic surgery , pulmonary or urinary wounds or injuries . the crosslinkable dendritic macromolecules can be fabricated into cell scaffold / gel / matrix of specified shapes and sizes using one - photon and multi - photon spectroscopic techniques . the crosslinked polymers can be seeded with cells and used to repair or replace organs , tissues or bones . alternatively , the polymers and cells can be mixed and injected into the in vivo site and crosslinked in situ for organ , tissue or bone repair or replacement .