Viable cells were distinguished by the lack of staining with propidium iodide (1 µg/ml) and considered positive for ALDH based on a control staining reaction using the enzyme inhibitor diethylaminobenzaldehyde (DEAB).
Previous reports have shown the use of multiple surface markers to identify NSCs based on a CD184+CD271-CD44-CD24+ staining signature (Yuan et al., 2011).
Despite its prominence in sexual differentiation research, the SDN-POA was not examined in these studies because mice do not have a discernable SDN-POA based on a Nissl stain [ 26].
The assay is based on a histochemical stain for β-galactosidase activity at pH 6 and found to be specific for senescent endothelial cells, but not for quiescent or terminally differentiated cells.
Staining intensity and subcellular localization were evaluated twice in a blinded manner based on a pre-agreed staining scoring standard obtained from an expert pathologist (Dr. Cheng, Department of Pathology, University of Pittsburgh).
Results from the bioassay based on a double fluorochrome staining were worthy to be described because they provide a clue to the mode of action of one (18) of the most promising anticancer lead structures of the series.
The protocol is based on a four-color staining.
The vessel area was selected manually based on a positive CD31 staining.
Histological examination of the tissue specimens was based on a Cresyl-Violet staining.
The protocol is based on a four-color staining: for mDC1-, a mAB against BDCA-1 (CD1c, PE); for pDC-, a mAB against BDCA-2 (CD303, FITC); and for mDC2 detection, a mAB against BDCA-3 (CD141, APC).
