Albert H. Coons

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A method for the specific histochemical demonstration of antibody in cells and parts of cells is described. It consists of carrying out a two stage immunological reaction on frozen sections of tissues: (a) allowing reaction between antibody in the tissue and dilute antigen applied in vitro, and (b) the detection of those areas where this antigen has been(More)
In previous studies from this laboratory a method has been described for the detection of antigenic material in tissues (1), utilizing antibody conjugated with fluorescein as a specific cytochemical reagent. The resulting fluorescent microprecipitate can be visualized under the fluorescence microscope. This method has been applied to studies of the(More)
Improvements in a method for the specific microscopic localization of antigen in tissue cells are described. This method employs antibody labelled with fluorescein isocyanate as a histochemical stain, the specific antigen-antibody precipitate being made visible under the fluorescence microscope. Two isomeric series derived from nitrofluorescein are(More)
After an antigenic stimulus, antibody is first demonstrable in the cytoplasm, and often in a spot in the nucleus, of large, immature cells in the medullary areas of the lymph node draining the site of injection. Morphologically, these cells have basophilic cytoplasm and a large nucleus, and are typical hematogenous stem cells. As these cells multiply and(More)
Students of antibody formation have long forecast the advantages to be gained from the successful cultivation of ceils from lymphatic tissue. The opportunity to investigate antibody formation in cell lines derived from single ancestors, for example, or to follow the events begun by the first exposure to antigen, would be invaluable in unraveling this(More)
Human liver sections were stained with anti-human serum albumin and/or anti-human fibrin monomer fluorescent conjugates. Approximately 10 per cent of the hepatic cells stained specifically for human serum albumin,1 per cent for fibrinogen, and 0.1 per cent for both. Approximately 18 per cent of the Kupffer cells stained specifically for human serum albumin(More)
Normal rabbit lymphocytes were stimulated to proliferate in vitro by antibody-antigen complexes. Stimulation was dependent upon C activity. Heat-inactivation or zymosan-treatment of the serum used in culture caused a 75 to 100% loss of responsiveness to the complexes. Serum-free culture or cultures with less than 1% serum supported only low levels of(More)