Overview: Tolerating Self
Experience teaches the immune system to recognize the self
Computer maps reveal the topography of arthritis
Move Over, Mr. Spock
Sound-sensitive crystals bring computerized holograms to life
Of Mice and MS
Antibodies cure a crippling disorder-but not in people
Old Green Genes
An ancient magnolia's DNA reveals its evolutionary roots
Neural net catches errors that slip through Pap tests
Tone of Relief
Ultrasound speeds the release of drugs from medical implants
Who's the Dealer?
What controls gene shuffling in the immune system?
A DNA repair system stops species from interbreeding
Can two new techniques shake up biotechnology?
Studies of nerve regeneration take a step forward
Old Gene, New Trick
The not-so-holy engrailed reveals the path of evolution
Hungry to Evolve?
Can mistakes and malnutrition explain Lamarckian bacteria?
Spacecraft on a String
Satellite "tethers " could provide power and thrust
In the Beginning
Evidence grows that RNA was the first self-made molecule