NewslettersImmune Regulation News An XBP1s–PIM-2 Positive Feedback Loop Controls IL-15–Mediated Survival of Natural Killer Cells By Laurisa Dohm - March 17, 2023 0 By using spliced X-box–binding protein 1 (XBP1s) conditional knockout mice, scientists found that XBP1s was critical for IL-15–mediated natural killer cell survival, but not proliferation, in vitro and in vivo. [Science Immunology] Full ArticlePress Release