On Sunday 10th April, I did another media change for the PBMCs. The number of cells is definitely reduced. When I checked the previous well, there were a number of dead cells visible, so I have clearly left a lot of cells behind.
This shows the importance of mixing the cells well and checking that most cells have been transferred during the media change process. I will need to be really careful and follow Ariane’s instructions carefully to avoid further cell losses.
At this stage, we only have around 1.7 x 105 cells (according to the cell count)!
On the positive side, there is no evidence of contamination and apart from low numbers, the cells seem healthy.