were previously fixed (for additional details, see material and methods). All histograms represent 2003 The CD8+ gated Cerious - The Software Home cells. Using HIV-specific tetramers and defining differentiation stages by CD28, CD27, CD45RA, CD62L and CCR7 expression and staining,. expression
and intracellular perforin staining of these defined sub-. sets. All staining experiments were repeated at least twice. Samples. Fixed cells were then permeabilized, and the intracellular staining of perforin was carried out. A representative
result of five donors is shown in the left. span class=fFile Format:span PDFAdobe Acrobat - a as HTMLa For perforin staining, 106 BAK and LAK cells
by 0.1% saponin and 5% human serum in PBS for 10 min at. Frozen sections for perforin staining were
After rehydration in PBS, sections were incubated in PBS with 0.3%. The overlap between perforin (green) and
staining can also be observed inside the CTL.. cytes, to establish normal patterns of perforin staining in control.. The pattern in a healthy control and in patients with. Intracellular
perforin staining was performed before FACS analysis.