Washington, Oct 12 : A team of researchers have simplified the task of choosing the right stress test that may help predict heart diseases.

Washington, October 12 : Researchers at the University of Pennsylvania have found that the nuclei of human stem cells are soft and flexible, and not hard by nature.

Washington, October 12 : A study in mice has shown that a gene called SIRT1 prevents cholesterol build-up by activating a cellular pathway that expels cholesterol from the body.