Gale Virtual Reference Library

I went into the Bone Marrow Transplantation article since it was of particular interest to me.  We personally know a young man who is dealing with cancer and will be going through this procedure.  Stem cells produce white blood cells, red blood cells and platelets.  Stem cells are constantly replacing these other cells as they wear out.  This particular procedure transplants healthy stem cells from a donor to a recipient who cannot manufacture the proper amount of normal cells due to disease etc.  There is a high risk of complications with this procedure such as infections and or transplant rejection.  The age of the patient is also a consideration for greater success.  Marrow is usually drawn from the hip bone of the donor by a syringe and put into the vein of the recipient. 
2.  Radon was the subject I did a search on -  We had our home tested for radon recently and it was in the normal range.  When we purchased our home we were told to install a ventilation system to lower the radon levels in our basement.  The system is working quite well and I wanted to find out a little more about radon itself.
Radon enters the home in the form of a gas.
Radon is released from the soils around which the home is built.
Radon is said to be cancer causing.
Radon tests should be used each year and if needed a ventilation system should be installed to control the levels of radon in a home. 
Very helpful information found in this resource.  Thanks so much.