Chest pain refers to pain felt anywhere in the chest area from the level of your shoulders to the bottom of your ribs. It is a common symptom. There are many causes of chest pain. This leaflet only deals with the most common.
Answered by The WikiAnswersÂ® Community. Making the world better, one answer at a time. The Genes determine the nature of the cell's work....Each gene is a blueprint that directs the production. The Genes determine the nature of the cell's work....Each gene is a blueprint that directs the production.
A 1936 article, again with the first author Dr. Sabin (you can read it here via PDF), makes the following intriguing statements (again, emphasis is mine): The second question at issue in hematology concerns the nature of the stem cell. It is accepted that there is a common stem cell for all the white blood cells. The only question at issue is whether this stem cell is identical with the lymphocyte or is a less differentiated type.