Quantification of Protoporphyrin IX Accumulation in Glioblastoma Cells: A New Technique

Figure 1

Confocal images of PpIX fluorescence (a), YFP fluorescence (b), and the overlay (c) of both for U87-YFP cells treated with 0.4 mM 5-ALA for 2 hours.

(a)

(b)

(c)