- Successful targeting to rat hepatic stellate cells using albumin modified with cyclic peptides that recognize the collagen type VI receptor. Beljaars, L., Molema, G., Schuppan, D., Geerts, A., De Bleser, P.J., Weert, B., Meijer, D.K., Poelstra, K. J. Biol. Chem. (2000)