The detective turned about and scrutinized us keenly; and through the gaslit mist I noticed that his hair was grizzled at the temples, and his face still cadaverous, from the wound that had nearly been his death.
There was something bleak and unapproachable in his face, and he was so stiffened and grizzled that I took him for an old man and was surprised to hear that he was not more than fifty-two.
If you take these old surviving cells and compete them, also under starvation conditions, against a new, fast-growing culture of E. coli, the grizzled old tough guys beat out the squeaky clean upstarts every single time.