Cita:"We stumbled on these things completely by chance," says┬áSusannah Maidment┬áof Imperial College London, whose team was trying to study bone fossilisation by cutting out tiny fragments of fossils.Instead, they found blood-like cells and collagen from 75-million-year-old dinosaur fossils ÔÇô 10 million years before┬áT. rex┬áappeared.Although the cells are unlikely to contain DNA, those extracted from better preserved fossils using the same technique may do so, she says.