VIRAL PARTICLE FOR RNA TRANSFER, ESPECIALLY INTO CELLS INVOLVED IN IMMUNE RESPONSE The present invention relates to retroviral particle comprising a protein derived from the Gag polyprotein, an envelope protein, optionally an integrase and at least two 5 encapsidated non-viral RNAs, the encapsidated non-viral RNAs each comprising an RNA sequence of interest bound to an encapsidation sequence, each encapsidation sequence being recognized by a binding domain introduced into the protein derived from the Gag polyprotein and/or into the integrase, and at least one of said sequences of interest of the encapsidated non-viral RNAs comprises a part coding at least one epitope 10 and/or at least one molecular structure specifically recognizing an epitope. (No Suitable Figure)
