All Stories by John Travis
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Homing in on a longevity gene
A gene on chromosome 4 may help people live to an old age.
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Embryo stem cells turned to blood
Human embryonic stem cells may provide a new source of blood and bone marrow.
- Health & Medicine
Arteries may be vulnerable to HIV attack
HIV may directly interact with cells in arteries, predisposing people to heart attacks.
- Health & Medicine
Immunity’s Eyes
Proteins called toll-like receptors allow human immune cells to detect microbes.
- Tech
Crystal listens for telltale sounds of virus
Scientists have built a device that can hear the movement of viral particles in fluids.
- Health & Medicine
Insulin lowers more than blood sugar
Insulin may reduce inflammation and protect the heart.
- Health & Medicine
Healing the heart from within
An unusual mouse strain can regenerate heart tissue when the organ is damaged.
- Health & Medicine
Stem cell research marches on
Cells from human embryos can be transformed into heart cells or insulin-secreting cells.
- Health & Medicine
Drugs Counter Mad Cow Agent in Cells
Fueled only by promising studies of cells, a California research team has invited controversy by beginning to give a little-used malaria drug to patients who have the human version of mad cow disease.
- Humans
Cloning hearing creates media frenzy
A panel reviewing human cloning heard the pros and cons of the issue during a fiery debate.
- Humans
Bush favors some stem cell research
President Bush said he would support work on stem cells that already had been propagated from embryos otherwise fated for disposal in fertility clinics, but he opposes financing the destruction of additional embryos to create new cell lines.
- Agriculture
Gene Makes Tomatoes Tolerate Salt
The world's first genetically engineered salt-tolerant tomato plant may help farmers utilize spoiled lands.
