Stem cells reside within fixed anatomical compartments — called niches — which provide a specialized environment to regulate the rate of stem cell proliferation, determine the fate of stem cell ...

Inositols are ancient molecules that were probably first made by a common ancestor of Archaea and Eukarya more than 2,000 million years ago. They are used by relatively few Bacteria.The ...

Primary progressive multiple sclerosis (PPMS) causes symptoms to worsen from the firt time they appear, without true remissions. Disability progresses over time, even if symptoms sometimes settle.

Established in 1945 under the Charter of the United Nations, the General Assembly occupies a central position as the chief deliberative, policymaking and representative organ of the United Nations.