Abstract: The present invention relates to methods, uses, systems and kits for laser-assisted delivery of at least one bioactive agent to a subject. Specifically, laser light is used to create channel(s) in tissue of the subject, and the bioactive agent (s) is applied to the opening of the channel(s). The bioactive agent may be a cell, such as a functional cell, including stem cells, protein, peptide, peptide fragment, nucleic acid, nucleotide fragment, gene, pharmaceutical compound, therapeutic compound, medicament, small molecule, aptamer, or any combination of the above. Delivery may be accomplished locally or systemically, and can be used to treat local or systemic conditions or disorders. Functional reconstitution and gene therapy is also possible with the present invention. Other uses include directing bioactive agent migration, stimulating endogenous stem cell circulation, treating biofilms, and regrowth of hair. Tissue explants are also incorporated in some embodiments.