摘要:
Group B Streptococcus type-specific polysaccharides types I.sub.1, I.sub.b, II and III have been obtained from strains grown in a modified soy bean and yeast medium. These polysaccharides are useful as active or passive streptococcal vaccines.
摘要:
A vaccine against Group C meningococcal meningitis consisting of a polysaccharide of which at least 80% by weight has a molecular weight in excess of 1,000,000 daltons is prepared. The polysaccharide was isolated from Group C hexadecyl trimethylammonium bromide cell paste with 1.0M CaCl.sub.2 extraction and purified by phenol extraction, ultracentrifugation at 100,000 g. and ethanol fractionation (30%-45% v/v in ethanol).
摘要:
A vaccine against Group C meningococcal meningitis consisting of a polysaccharide of which at least 80% by weight has a molecular weight in excess of 1,000,000 daltons is prepared. The polysaccharide was isolated from Group C hexadecyl trimethylammonium bromide cell paste with 1.0M CaCl.sub.2 extraction and purified by phenol extraction, ultracentrifugation at 100,000 g. and ethanol fractionation (30%-45% v/v in ethanol).
摘要:
The present invention provides a non-infectious immunotherapeutic containing retroviral particles devoid of outer envelope proteins or containing selected antigens isolated from a retrovirus. There is also provided a vaccine effective against HIV. In one aspect, the immunogen is useful for immunizing an individual previously infected by a retrovirus including HIV, so as to induce immunoprotective factors protective against progression of the infection. In another aspect, the vaccine is useful for vaccinating an individual not previously infected with HIV in order to prevent subsequently acquired infection. In another aspect, there is provided a method of rendering a viral immunogen non-infectious. The immunogen may also be used to produce is antibodies for passive immunotherapy, alone or in conjunction with active immunotherapy, in individuals infected with a retrovirus, including HIV, preferably those individuals exhibiting low levels of antibodies to retroviral gene products other than the outer envelope.
摘要:
The present invention provides a non-infectious immunotherapeutic containing retroviral particles devoid of outer envelope proteins or containing selected antigens isolated from a retrovirus. There is also provided a vaccine effective against HIV. In one aspect, the immunogen is useful for immunizing an individual previously infected by a retrovirus including HIV, so as to induce immunoprotective factors protective against progression of the infection. In another aspect, the vaccine is useful for vaccinating an individual not previously infected with HIV in order to prevent subsequently acquired infection. In another aspect, there is provided a method of rendering a viral immunogen non-infectious. The immunogen may also be used to produce antibodies for passive immunotherapy, alone or in conjunction with active immunotherapy, in individuals infected with a retrovirus, including HIV, preferably those individuals exhibiting low levels of antibodies to retroviral gene products other than the outer envelope.
摘要:
A high molecular weight capsular polysaccharide from H. influenza type b is an effective immunogenic agent against infection caused by the H. influenza type b bacterium.
摘要:
A molecular complex comprising a gene encoding interferon releasably linked to a conjugate of a nucleic acid binding agent and a ligand which binds to a component on the surface of a cell. In a preferred embodiment, the gene encodes human IFN-.alpha., IFN-.beta., or IFN-.gamma.. The complex can be used to obtain targeted expression of interferon in selected cells either in vivo or in vitro.
摘要:
The present invention provides vaccines and a means of vaccinating a host so as to prevent or control specific T cell mediated pathologies. The vaccine is composed of anti-idiotypic antibodies which are internal images of a segment of the T cell receptor (TCR) present on the surface of the pathogenic T cells. The vaccine is administered to the host in a manner that induces an immune response directed against the TCR of pathologic T cell. This immune response down regulates or deletes the pathogenic T cells, thus ablating the disease pathogenesis. Means of determining an appropriate amino acid sequence for such a vaccine are also provided.