ve

"In the immune system, these molecules help the body remember past infections; during development, those same molecules help cells remember that they've become a neuron or muscle and maintain that identity long-term," Rajasethupathy says.

Ireland, following defeats by the Springboks and New Zealand, look saddled with the same problems they've had since Johnny Sexton's retirement after the last World Cup, with neither Sam Prendergast or Jack Crowley making the No 10 shirt their own.

"Sometimes you've got to go through some difficult times to go through some tight losses to understand how to actually convert into wins with a young side."

After years of riding a wellness wave, they’ve suddenly found themselves squeezed between rising costs and a jittery consumer.

"It's the first time we've had a complete, fleshed-out view of a large dinosaur that we can really feel confident about," said senior author Paul Sereno, PhD, Professor of Organismal Biology and Anatomy at UChicago.