A study has analyzed gene and isoform expression in haematopoietic stem and progenitor cells at the single-cell level, revealing signatures of ageing. The research methodology appears to be part of a broader trend of single-cell profiling studies, with similar approaches being applied to various other cell types and biological processes. The specific findings of the study on haematopoietic stem and progenitor cells are not detailed in the available information, but they seem to be related to a larger body of work on single-cell transcriptomics and isoform expression.