Figure 2.

Imaging uptake of propargyl choline in 2D cell culture and 3D tissue phantom models. Fluorescence and corresponding white light images of HeLa cells incubated (A) with propargyl choline for 1 hour and stained with Alexa 488 azide and (B) without propargyl choline but stained with Alexa 488 azide. (C) Propargyl choline was topically delivered in 3D tissue phantom. Fluorescence and corresponding white light images of transverse section of tissue phantoms were acquired after fixation and staining with Alexa 488 azide. (D) Control tissue phantom was not incubated with propargyl choline but was sliced, fixed, and stained with Alexa 488 azide.