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J Immunol. 1987 Jun 1;138(11):3766-70.

Lack of expression of HLA [corrected] class I and class II molecules on the human oocyte.

Erratum in

  • J Immunol 1987 Nov 15;139(10):3550.


The expression of histocompatibility leukocyte antigen (HLA) class I and class II antigens on human oocytes was investigated by the indirect immunofluorescence assay using well-defined monoclonal antibodies. Oocytes were obtained from an in vitro fertilization program or were studied on frozen sections from human ovaries. Neither HLA class I, beta 2-microglobulin, nor HLA class II molecules were detected on cultured oocytes or frozen sections. The zona pellucida also lacked these antigens, but granulosa cells expressed HLA class I molecules. Our results also indicate the presence of certain types of class II molecules on granulosa cells. The present experiments demonstrate that the human oocyte belongs to those few cell types in the human body which are devoid of both types of HLA molecules.

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