title: A cell ELISA technique. The direct detection and semi-quantitation of immunoglobulin positive cells in 7 day lymphocyte cultures using the microtitre culture plates as the solid phase.
abstract: A sensitive ELISA is described which allows the detection and quantitation of immunoglobulin positive Peyer's patch and spleen lymphocytes in tissue culture microtitre plates. A methanol fixation step is used to fix the cells to the microtitre plate. The effects of various mitogens and an antigen on the number of immunoglobulin positive cells present after a 7 day culture were studied. Results were expressed either in optical densities or as percentages of the unstimulated control. The method proves a useful addition to existing techniques for studying the effects of mitogens and other agents on in vitro immunoglobulin synthesis by lymphocytes, and reflects immunoglobulin levels in the culture supernatants.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology*; D002478:Cells, Cultured; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D007124:Immunoenzyme Techniques; D008214:Lymphocytes / Q000276:immunology; D051379:Mice; D010581:Peyer's Patches / Q000276:immunology; D013154:Spleen / Q000276:immunology