Protocol to isolate immune cells from mouse pancreatic lymph nodes and whole pancreas for mass cytometric analyses

Investigating the immune attack on β cells is critical to understanding autoimmune diabetes. Here, we present a protocol to isolate immune cells from mouse pancreatic lymph nodes and whole pancreas, followed by mass cytometric analyses. This protocol can be used to analyze subsets of innate and adaptive immune cells that play critical roles in autoimmune diabetes, with as few as 5 × 10⁵ cells. This protocol can also be adapted to study resident immune cells from other tissues. For complete details on the use and execution of this protocol, please refer to Piñeros et al. (2022).¹.