And Daniel H. Silberberg Professor of Medicine at CUMC, who initiated this research. Previously, Dr. Wang discovered an analogous stem cell in the digestive tract and noticed that it was also abundant in the bone. ‘These cells are particularly active during development, however they also increase in quantity in adulthood after bone injury,’ says Gerard Karsenty, MD, PhD, the Paul A. Marks Professor of Development and Genetics, chair of the Division of Genetics & Development, and a member of the research team. The study also showed that the adult OCRs are unique from mesenchymal stem cells , which are likely involved in bone generation during adulthood and development. Researchers presumed that MSCs had been the origin of most bone, cartilage, and excess fat, but recent studies show that these cells usually do not generate young cartilage and bone.Authorities in Canada have got issued the recall as the pencils have a higher lead content material in the coating. Health Canada says the pieces have significantly more than 600 milligrams of business lead per kilogram, which means they can not be sold or promoted, since January this season but they have even so apparently been on shop shelves. The pencils do not pose a risk unless a kid chews or sucks on them,which of course most children do and Health Canada has warned that even short-term exposure to high lead levels could cause vomiting, diarrhea, convulsions, coma or even death.