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• HAT

  Hypoxanthine, Aminopterin, Thymidine Selection medium used in production of hybridomas.

• HB

  Hybridoma Supplement

• HCG

  Human Chorionic Gonadotropin

• HEPA

  High Efficiency Particulate Air

• Heterokaryon

  A cell possessing two or more genetically different nuclei in a common cytoplasm, usually derived as a result of cell-to-cell fusion.

• Heteroploid

  The term given to a cell culture when the cells comprising the culture possess nuclei containing chromosome numbers other than the diploid number. This is a term used only to describe a culture and is not used to describe individual cells. Thus, a heteroploid culture would be one that contains aneuploid cells.

• HNCMB

  Hungarian National Collection of Medical Bacteria, Budapest, Hungary

• Homokaryon

  A cell possessing two or more genetically identical nuclei in a common cytoplasm, derived as a result of cell-to-cell fusion.

• HS

  Horese Serum

• HT

  Hypoxanthine, Thymidine

• Hybrid Cell

  The term used to describe the mononucleate cell that results from the fusion of two different cells, leading to the formation of a synkaryon.

• Hybridoma

  The cell which results from the fusion of an antibody producing tumour cell (myeloma) and an antigenically-stimulated normal plasma cell. Such cells are constructed because they produce a single antibody directed against the antigen epitope that stimulated the plasma cell. This antibody is referred to as a monoclonal antibody