A zebrafish tailfin injury assay protocol for quantifying immune cell migration and infiltration

Myeloid cells, such as macrophages, are critical components of the inflammatory response, in which infected, injured, or necrotic tissues are targeted for resolution. A key aspect of the inflammatory response is migration of myeloid cells to target tissues. Although studying immune cell migration in mammalian models in vivo is challenging, zebrafish are more tractable owing to their optical transparency and rapidity in generating transgenic lines. Here, we present a tailfin injury assay protocol for quantifying immune infiltration at injury sites. For complete details on the use and execution of this profile, please refer to Anderson-Baucum et al. (2021) and Kulkarni et al. (2021).