Tunable red to green emissions in upconversion nanoparticles allow precise identification of single particles, enabling accurate, long-term multicolor tracking in complex live cell environments.

Light scattering techniques have emerged as a powerful set of non‐invasive optical methods for the analysis of cells and particulate matter. By measuring and interpreting the patterns of light ...

Aim: This study examines the absolute quantification of particle uptake into cells. Methods: We developed a novel method to analyze stacks of confocal fluorescence images of single cells interacting ...

The measurement of particles in cell therapy production has long presented challenges, particularly since the drug product itself is composed of particles, compounding the complexities in the process.