natural antibody

This may relate to differences in the level of circulating natural antibodies between the two species.

They are also trying to attach synthetic catalysts to natural antibodies.

Existing vaccines or natural antibodies cannot produce an immune response to the new strain.

For this reason IgM has sometimes been called a "natural antibody".

Humans and higher primates also produce "natural antibodies" which are present in serum before viral infection.

Such natural antibodies can mask or hide the antigens, making it more difficult for the cloned antibody to do its job.

The scientists hope the design of the immunoadhesins will also give them some of the destructive capabilities of natural antibodies.

Physiologically, they also have "higher levels of natural antibody activity - antigens against everything from colds and flu to cancers."

Natural antibodies have not proved effective in combating the AIDS virus.

A microantibody is an artificial short chain of amino acids copied from a fully functional natural antibody.

At birth, however, babies generally receive antibodies from their mothers that last about 15 months, and the natural antibodies block the vaccine's stimulating effects.

Natural antibodies may refer to antibodies that:

She will have no natural antibodies to the infection and therefore will not have passed any such antibodies to her baby via the placenta.

A rapid, violent hyperacute response results due to preformed natural antibodies, known as XNAs.

Natural antibodies have been defined as antibodies that are produced without any previous infection, vaccination, other foreign antigen exposure or passive immunization.

NK cells, natural antibodies, and complement, potentially important in controlling CMV infection, await further study.

But the use of whole, natural antibodies as medicines presents many problems: They can only be produced by live cells and this process is difficult to control on an industrial scale.

Developing a sort of immunization through repeated exposure to HIV or its component proteins, which would produce a natural antibody response against HIV.

The most advanced such candidate is known as bapineuzumab or aab-001, and this antibody is designed as essentially identical to the natural antibody triggered by the earlier AN-1792 vaccine.

It is not certain whether they are natural antibodies (being produced without any previous infection, vaccination, other foreign antigen exposure or passive immunization) or are caused by infection in early life.

With the AIDS virus, in contrast, Dr. Salk's proposed approach would usually be applied after natural antibodies had formed but before the major spread of the virus in the body.

Rejection of xenotransplantated organs is thought to be, in part, the result of natural antibodies circulating in the serum of the recipient binding to α-Gal antigens expressed on the donor tissue.

In another study, following the rinderpest outbreak in Ethiopia, it was found that dromedaries have natural antibodies against rinderpest virus and peste des petits ruminants virus (ovine rinderpest).

Some individuals develop natural serum antibodies to the surface polysaccharides of some agents although they have had little or no contact with the agent, these natural antibodies confer specific protection to adults and are passively transmitted to newborns.

It is mediated by the binding of XNAs (xenoreactive natural antibodies) to the donor endothelium, causing activation of the human complement system which results in endothelial damage, inflammation, thrombosis and necrosis of the transplant.