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Scientists may have figured out how to use stem cells to regenerate lost or injured tissue

In experiments with fruit flies, Johns Hopkins scientists have restored the insect's sperm-making stem cells by triggering cells on the way to becoming sperm to reverse course. The unexpected findings are described in the May 13 issue of Science.

19 May 2004

Multimillion-dollar electron microscope unveils shapes of viruses and proteins

With a multimillion-dollar electron microscope and computer programs that can pick out the shapes of structures only six atoms wide, Dr. Wah Chiu and his colleagues at Baylor College of Medicine in Houston are attempting to explain the intricate structures of viruses and proteins.

19 May 2004

Researchers make it possible to visualize memories

Researchers at Baylor College of Medicine in Houston have described how memories are made – and they have made it possible for you to see it.

15 May 2004

Technique to visualize changes in nerve connections when flies learn may help to understand how memories form

For the first time, researchers have used a technique called optical imaging to visualize changes in nerve connections when flies learn. These changes may be the beginning of a complex chain of events that leads to formation of lasting memories.

14 May 2004

Telemedicine focus of symposium "Future Directions for Telemedicine"

A pediatric patient in Marquette, Michigan is being examined by a doctor— but the doctor is 365 miles away in Ann Arbor. Elsewhere in Michigan, a mental health patient, his family and psychiatrist are participating in a commitment hearing in the safe, secure environment of a psychiatric unit— but the judge is actually on the other side of town.

30 Apr 2004

Overview of West Nile virus before season starts

West Nile virus is a newly emergent virus of the family Flaviviridae, found in both tropical and temperate regions. It mainly infects birds, but is also the cause of a number of conditions in humans, horses, and some other mammals. It is transmitted by bites of infected mosquitoes.

24 Apr 2004

Severe Acute Respiratory Syndrome (SARS) overview

Severe Acute Respiratory Syndrome (SARS) is an atypical form of pneumonia that first appeared in November 2002 in Guangdong Province, China.

24 Apr 2004

Curry offers possible protection against Alzheimer’s disease

A new study has found that curry, a common and popular cooking additive, could be an effective enhancer of an enzyme that protects the brain against oxidative conditions.

19 Apr 2004

Using mass spectrometry to diagnose cancers and non-cancerous diseases

Using mass spectrometry, Emory University scientists have identified specific protein fingerprints in the cerebrospinal fluid (CSF) of humans that enable them to differentiate between cancers, both primary and metastatic, and non-cancerous diseases of the central nervous system (CNS).

18 Apr 2004

Study suggests ways to prevent prostate cancer

Current information on prostate cancer risk factors suggests that some cases might be prevented. One possible risk factor that can be changed is diet. You may be able to reduce your risk of prostate cancer by changing the way you eat.

11 Apr 2004

Magnetic tweezers that can manipulate strands of DNA

An array of magnetic traps designed for manipulating individual biomolecules and measuring the ultrasmall forces that affect their behavior has been demonstrated by scientists at the National Institute of Standards and Technology (NIST).

9 Apr 2004

Cancer research boosted in Queensland Australia

The University of Queensland's Institute for Molecular Bioscience (IMB) is one of just three recipients of the largest research grant ever given by the Australian Cancer Research Foundation (ACRF).

29 Mar 2004

Comparative genomics to cast new light on other spirochete microbes

Three centuries after a pioneering Dutch microbiologist first observed the spiral-shaped oral pathogen Treponema denticola, scientists have deciphered the bacterium’s entire DNA sequence and used comparative genomics to cast new light on other spirochete microbes.

29 Mar 2004

Scientists have taken a significant leap forward in understanding the complex ways that molecules work together in cells.

Although scientists already know a lot about single molecules, they know very little about how they are assembled into larger molecular complexes or "machines" and how these machines work together to create a complete, functioning cell. The problem is like trying to assemble a puzzle with billions of pieces– with only the shapes of some pieces to go on.

25 Mar 2004

Carbon Dioxide may be used in medical implants

Carbon dioxide, an environmentally friendly solvent for dyeing and dry cleaning, may become a valuable new tool for making medical implants, according to a study at Ohio State University.

23 Mar 2004

New microchip manipulates DNA and protein molecules

A Johns Hopkins undergraduate has constructed a new type of microchip that can move and isolate DNA and protein molecules. He believes that by linking the chip with analysis equipment, a user could identify medical ailments, monitor a patient's health or detect viruses and other biohazards before they spread.

22 Mar 2004