Abstract: The present invention relates to peptides, referred to as CBD-1, CBD-2, CBM-1/TH-1, CBM-1/TH-2, CBM-2/TH-1, CBM-2/TH-2 and C-20 peptides, which are antigenic and elicit protective immune response against HIV infection. Compositions, pharmaceutical compositions and vaccines comprising these antigenic peptides are also encompassed by the present invention, as well as neutralizing antibodies which inhibit infection of primary CD4+ T lymphocytes by various HIV isolates. Methods for diagnosis of HIV are also disclosed.

Abstract: The present invention relates to a process of producing a nano-CBD liposome system comprises: (i) preparing a dispersal phase by dissolving CBD in an ethanol solvent in a ratio between mass of CBD:volumn of ethanol solvent as 8:10 by a stirrer at a speed of 300 to 500 rpm and simultaneously heating to a temperature ranging from 40 to 60° C. within 4 to 8 hours; (ii) preparing a liposome carrier consisting of lecithin, olive oil in a ratio by mass of 1:3 mixed in a themostatic bath at a temperature from 40 to 60° C. to ensure that lecithin completely dissolves in oil, stirring homogeneously; (iii) adding the carrier to the dispersal phase in a ratio by mass of 40:60, continuing heating the dispersal phase to a temperature ranging from 40 to 60° C., stirring at a speed of 800 to 1000 rpm for 1 to 2 hours; (iv) cooling the resulting mixture to 25° C. and injecting one volumn of distilled water between 1 and 1.