Direct injection of protamine-protected mRNA: results of a phase 1/2 vaccination trial in metastatic melanoma patients. - Weide B; Pascolo S; Scheel B; Derhovanessian E; Pflugfelder A; Eigentler TK; Pawelec G; Hoerr I; Rammensee HG; Garbe C (Journal of immunotherapy (Hagerstown, Md. : 1997), 2009)