ScienceDaily: Biotechnology News

---

• New light shed on cell division
• Why hair turns gray: Communication between hair follicles and melanocyte stem cells key to mystery
• Low-carbohydrate, high-protein diets may reduce both tumor growth rates and cancer risk
• New cell type offers immunology hope

New light shed on cell division Posted: 14 Jun 2011 05:36 PM PDT A new study has yielded insights into how chromosomes separate when a cell divides. Centromeres, located in the little pinched waist of each chromosome, control the movements that separate sister chromosomes when cells divide ensuring that each daughter cell inherits a complete copy of each chromosome -- and researchers have visualized how the parts of centromeres assemble themselves as human cells grow and divide.

Why hair turns gray: Communication between hair follicles and melanocyte stem cells key to mystery Posted: 14 Jun 2011 08:50 AM PDT A new study has shown that, for the first time, Wnt signaling, already known to control many biological processes, between hair follicles and melanocyte stem cells can dictate hair pigmentation.

Low-carbohydrate, high-protein diets may reduce both tumor growth rates and cancer risk Posted: 14 Jun 2011 08:50 AM PDT Eating a low-carbohydrate, high-protein diet may reduce the risk of cancer and slow the growth of tumors already present, according to a new study.

New cell type offers immunology hope Posted: 14 Jun 2011 07:12 AM PDT Scientists have discovered a new type of cell in the immune system. The new cell type, a kind of white blood cell, belongs to a family of T-cells that play a critical role in protection against infectious disease. Their findings could ultimately lead to the development of novel drugs that strengthen the immune response against particular types of infectious organisms.

You are subscribed to email updates from ScienceDaily: Biotechnology News To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google Inc., 20 West Kinzie, Chicago IL USA 60610