The fetal cell-maternal antibody complexes are identified and isolated using labelled agents that bind to the maternal antibodies.

The influence of passively acquired and maternally derived antibodies on the efficacy of a vaccine shall be adequately evaluated, if appropriate.

Enzootic influenza, subpopulations and maternal antibodies

The persistence of maternal antibodies affects the vaccine response.

Maternally derived antibodies did not appear to interfere with the vaccines.

This is called passive transfer of maternal antibodies.

The problem is that maternal antibodies interfere with the efficacy of the vaccines.

Infants were also protected by maternal antibodies.

Before this stage, the maternal antibodies may counteract the effects.

All improve as the level of maternal antibody declines.

And by 16 weeks of age the maternal antibodies are gone.

Naturally, over time, maternal antibodies in babies decline.

Puppies and kittens can retain maternal antibodies up to 16 weeks of age.

Enzootic influenza: a balance between subpopulations and maternal antibodies

Maternal anti-brain antibodies may play a role in autism.