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The CRL-1621cell line is reported to be positive for Epstein-Barr nuclear antigen (EBNA +) and Epstein-Barr viral capsid antigen (EBVCA +). Since the HMy2.CIR cell line was derived from the HMy.2 B lymphoblastoid cell line, a fast growing mutant of the ARH-77 cell line (ATCC CRL-1621), it is assumed to be EBNA positive.
The HMy2.CIR cell line was derived from the HMy.2 B lymphoblastoid cell line, a fast growing mutant of the ARH-77 cell line (ATCC CRL-1621), by gamma irradiation and selection for loss of HLA class I antigen expression. [23312]
The cells express no HLA A or B locus products, but do express small amounts of HLA Cw4.
The cells are useful as host for transfected class I major histocompatibility antigen genes.
ATCC complete growth medium: The base medium for this cell line is ATCC-formulated Iscove's Modified Dulbecco's Medium, Catalog No. 30-2005. To make the complete growth medium, add the following components to the base medium: fetal bovine serum to a final concentration of 10%. Atmosphere: air, 95%; carbon dioxide (CO2), 5% Temperature: 37.0°C
Subculturing:
Protocol: Cultures can be maintained by addition or replacement of fresh medium. Start cultures at 2 X 10(5) viable cells/ml. Interval: Maintain between 2 X 10(5) and 1 X 10(6) viable cells/ml. Medium Renewal: Every 2 to 3 days
Preservation:
Freeze medium: Complete growth medium supplemented with 5% (v/v) DMSO Storage temperature: liquid nitrogen vapor phase
23312: Storkus WJ, et al. Reversal of natural killing susceptibility in target cells expressing transfected class I HLA genes. Proc. Natl. Acad. Sci. USA 86: 2361-2364, 1989. PubMed: 2784569
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