The invention generally relates to methods of using compositions that include sets of magnetic particles, members of each set being conjugated to an antibody specific for a pathogen, and magnets to isolate a pathogen from a body fluid sample.

The invention generally relates to conducting an assay on a sample that isolates a bacterium from the sample, in which the assay isolates as low as about 1 CFU/ml of bacteria in the sample.

This application provides isolated antibodies, or antigen-binding fragments thereof, that specifically recognize one or more gut bacterial lipoglycans, and polynucleotides and vectors that encode for such antibodies or antigen-binding fragments. This application further provides methods of producing the antibodies or antigen-binding fragments and using the antibodies or antigen-binding fragments for treatment of diseases.

This application provides isolated antibodies, or antigen-binding fragments thereof, that specifically recognize one or more gut bacterial lipoglycans, and polynucleotides and vectors that encode for such antibodies or antigen-binding fragments. This application further provides methods of producing the antibodies or antigen-binding fragments and using the antibodies or antigen-binding fragments for treatment of diseases.