Washington, Apr 15 : A drug commonly used to treat severe osteoporosis can mend hard-to-heal broken bones of elderly patients at a rate typically seen when they were young kids, say researchers.

The study led by Dr J. Edward Puzas, who heads orthopaedic bone research at the University of Rochester Medical Centre showed that the drug teriparatide, or Forteo can significantly boost our bodies'' bone stem cell production.

London, April 15 : Biologists at the University of Arizona have identified an all-female species of ant, which has dispensed with sex.

The researchers have revealed that the ant species — Mycocepurus smithii — rely upon cloning for reproduction. They say that the queen ants copy themselves to produce genetically identical daughters.

According to the research team, this species cultivates a garden of fungus, which also reproduces asexually.

Biologist Anna Himler, who led the research, revealed that the research team used a battery of tests to verify their findings.

Upon "fingerprinting" DNA of the ant species, the researchers found them all to be clones of the colony''s queen.

Washington, Apr 15 : People with chronic asthma have been offered a new hope in the form of an inhaler that contains two medicines.

Washington, Apr 15 : By using eight clinical variables, scientists have found a new method, called the CRUSADE bleeding score, to estimate the risk of bleeding for a patient having a heart attack.

The bleeding-risk assessment tool, created by scientists at Washington University School of Medicine in St. Louis, Duke University, could also help lessen the chances that heart attack patients will experience this common complication.

Washington, Apr 15 : A Michigan University researcher has developed a new vaccine for one of the deadliest strain of E. coli bacteria that kills over two to three million children every year.

Enterotoxigenic E. Coli, (ETEC) is responsible for 60 percent to 70 percent of all E. coli diarrheal disease.

Washington, Apr 15 : A new study has found that wrist acupunture or acupressure can significantly reduce vomiting and nausea symptoms, which are generally experienced after surgery.

The researchers have found that by stimulating an acupoint called the Pericardium (P6) point in the patients'' wrists can help reduce these symptoms.

Lead researcher Anna Lee of the Department of Anesthesia and Intensive Care at The Chinese University of Hong Kong revealed that stimulating the P6 point can occur by several methods such as acupuncture or acupressure.