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发表于 2013-1-25 21:37:44
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5. Alternative Fixation and Permeabilization Protocol
Cells can be fixed and stored to continue the intracellular staining at a later time.
a. Fixation and Storage of Cells
1. Resuspend cells in 100μl (or 1 ml/107 cells for bulk fixing) of a 4%
paraformaldehyde solution at 4°C for 10-20 minutes.
2. Wash cells 2× in Staining Buffer.
3. Resuspend cells in Staining Buffer for storing cells at 4°C for up to
72 hrs or in 90% FCS/10% DMSO for storing at -80°C for longer
periods of time.
b. Permeabilizing Fixed Cells.
1. For frozen cells, wash 2× to remove DMSO. For cells at 4°C,
pellet and remove staining buffer.
2. Resuspend cells in BD Perm/Wash™ buffer for 15 minutes.
3. Pellet by centrifugation.
4. Stain for intracellular cytokines.
在这里好像没提到继续要破膜 |
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