Figure 2: Preparation of cell fate tracker DL2.
From: An authentic imaging probe to track cell fate from beginning to end

(a) Schematic illustrating the process of preparing multilayered nanoprobes using PDL–FITC/PLL-cy5.5 and PAA as the charged polyelectrolytes. Negatively charged PAA layers that are placed between PDL–FITC and/or PLL-cy5.5 layers are omitted from the illustration for simplicity. (b) The average size (blue bar) and zeta potential (black circle) of each multilayered nanoprobe. All measurements were done in triplicate and the data were shown as mean±s.d.