Modified prolactin receptor (the Nb2 form)
cell culture | mammalian: suitable
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The lot specific COA document can be found by entering the lot number above under the "Documents" section.
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Upon receipt, frozen ampules should be transferred directly to vapor phase liquid nitrogen without delay (-135°C) or liquid phase liquid nitrogen if vapor phase is not available. DO NOT use a -80°C freezer as an alternative; this will result in loss of viability.
If ampules are immersed into liquid phase of liquid nitrogen, it increases the risk of the liquid seeping into the vial. This could lead to problems of cross-contamination and increased risk of the ampule exploding when thawed.
A protocol for thawing cells can be found in the ECACC handbook.
The medium for each cell line is listed on the product page. It is specific to each cell line. If not visible on the Sigma-Aldrich website product page, the HPA website also contains the same information (www.hpacultures.org.uk). The product number for the cell line is the same on either site.
If the passage of the cells is known, it is listed on the product page at the HPA website (www.hpacultures.org.uk).
Each vial of cells contains 2-3 x 106 cells in 1 ml of freezing media. This is in a 1.8 mL ampule. For exceptionally large cells, counts may decrease. Suspension cells, generally smaller cells, may contain as many as 4-5 x 106 cells/vial to assure optimal viability upon thaw.
ECACC routinely tests all manufactured cell banks for mycoplasma.
A protocol for freezing down cells for cell stocks can be found in the ECACC manual.
HPA Cultures does not perform any viral testing on the cell lines.
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