Abstract
In this issue of the Biomedical Journal, we take a look at some of the immune system's most peculiar cells, invariant natural killer T cells, which have features of both innate and adaptive cells. We also highlight a clinical study revealing that high serum phosphate levels could show that it's time to start dialysis in patients with chronic kidney diseases. Finally, this issue also includes some case reports, including an unusual case of aspergillosis related to long-term inhaler use.