Figure 1
From: Determining the extent of maternal-foetal chimerism in cord blood

Storage at RT leads to asymmetric loss of HLA expression. Whole blood was either kept at room temperature (RT) or at 4 °C for 3 days. Blood was Ficolled on the day of the HLA staining and FACS analysis. (a) Histograms per anti-HLA antibody are shown comparing the staining on Day 0 (blue) to that on Day 3 (red). (b) Percentage of cells that are negative for the HLA staining per day (see key in figure for symbols used).