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The expression of ABH antigens during in vitro megakaryocyte maturation: origin of heterogeneity of antigen density
Author(s) -
Dunstan Robert A.
Publication year - 1986
Publication title -
british journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.907
H-Index - 186
eISSN - 1365-2141
pISSN - 0007-1048
DOI - 10.1111/j.1365-2141.1986.tb02971.x
Subject(s) - antigen , immunofluorescence , peripheral blood mononuclear cell , microbiology and biotechnology , monoclonal antibody , biology , megakaryocyte , population , homogeneous , in vitro , labelling , antibody , immunology , stem cell , medicine , genetics , haematopoiesis , biochemistry , environmental health , physics , thermodynamics
S ummary . An indirect immunofluorescence technique with single and double labelling has been used to examine cultured human megakaryocytes for ABH antigens. This technique demonstrated the presence of these antigens on megakaryocytes and a population of small mononuclear cells that probably represent the differentiated precursors of megakaryocytes. In contrast to the intense homogeneous labelling with human anti‐Pl A1 , the labelling with human anti‐A, mouse monoclonal anti‐A and anti‐type 2H is light and heterogeneous, with many cells staining weakly or not at all. This variability in blood group ABH surface antigen expression appears to occur at the level of cell proliferation within colonies. While cells within an individual colony are homogeneous in fluorescence intensity, there is considerable variation between colonies. The progeny of individual megakaryocytes also appear uniform in ABH antigen expression.