Fossilised red blood cells found in 115-million-year-old dinosaur bone

Researchers have reported preserved red blood cells in a bone from a dinosaur that lived roughly 115 million years ago. The finding challenges the assumption that such soft biological structures could not survive in mineralised remains over that span of time. The article is a personal essay by a bioinformatics developer in Montpellier, who uses the discovery as a reflection on her own work. She describes how examining a haemoglobin molecule in PyMOL, moving the camera inside the heme pocket rather than viewing it from a distance, changed how she visualises protein structures. The piece encourages readers to explore molecular models more immersively.