A new method of creating 3-D images of living cells without disturbing them promises to open an unprecedented view into how they operate.
University of Illinois engineers say the technique, called white-light diffraction tomography, will let researchers watch cellular processes as they unfold, the effects of drugs and how stem cells change into specialized cells.
They are known as the window to the soul, each a different color, size and shape. But could your eyes also fight infections?
For years optometrists have been trying to figure out why the human eye is resistant to infection.
“What we know is people virtually never get corneal infections unless they’re a contact lens wearer or unless they have very severe injury to the cornea,” said Suzanne Fleiszig, an optometrist at the University of California, Berkeley.
Survival of the fittest has served humans and our ancestors well for millions of years. We have developed sophisticated defense mechanisms, like highly specialized senses and immune systems that can thwart many of our greatest threats. And for the things our immune systems can’t defeat, we have developed advanced medical techniques to combat infection and disease.
Of course, we’re not the only creatures capable of adapting. Like all other living organisms, bacteria are constantly evolving. And because they multiply quickly and in large numbers, their rate of change dwarfs our own.