Antibody Production by Single Cells

FAGREUS1 and others2,3 have shown that certain tissues from pre-sensitized animals can form antibody in vitro. This communication describes a technique whereby antibody production by single cells isolated in microdroplets can be detected. The technique is based on specific immobilization of Salmonella serotypes by anti-flagellar antibody. It was observed that single cells from a rat, simultaneously stimulated with two antigens, formed detectable amounts of one or the other antibody.