Correction to “Controlled Release of Drugs from Gradient Hydrogels for High-Throughput Analysis of Cell–Drug Interactions”

In the original version of this article, some of the representative live/dead images were inadvertently repeated in Figure 4B–D. These panels were composed of several individual images that the authors manually stacked together to display the entire hydrogel area from top to bottom. To validate our data, we repeated the experiments presented in Figure 4B–D and would like to include the new data to address this concern. The incorporation of these updated panels does not alter the interpretation of the data or the conclusions of the study but serves to confirm the accuracy of the published work by the authors. We apologize for this error. Figure 4. Effect of drug on cell viability. Fluorescent micrographs of 3T3 cells cultured in a multiwell plate and treated with (B) PEGDA hydrogel without OA (negative control), (C) with 2 μM OA (positive control), and (D) with an OA concentration gradient. Dead cells are marked in red by ethidium bromide, while living cells are marked in green by calcein-AM. This article has not yet been cited by other publications.