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ATCC® CCL-2: Passage Number
Why is the passage number for ATCC® CCL-2 (HeLa) "unknown"?

HeLa cells (ATCC® CCL-2 ™) were deposited to ATCC without an exact passage number. The contributor noted an approximate number of times the cells had been transferred in vitro, but the passage history of the cells was not accurately recorded between the date of isolation and the date of deposit to ATCC. As a result, ATCC does not know the passage number of HeLa cells.

Date Created07/17/2012 07:12 PM
Date Updated02/05/2013 02:26 PM

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