Stem cell research could lead to medical cures. stem cell research probably would not benefit a) the eradication of childhood illnesses. b) regeneration of heart tissue. c) new treatments for cancer patients. d) regeneration of nerve tissue and/or brain tissue.

Correct A) The eradication of childhood illnesses

Stem cell are the type of biological cells that have the ability to differentiate into other cell type and can divide to produce different types of cells in the body. They are called regenerative cell which renew itself, they are found in multi-cellular organism.

It can be used as a renewable source of cell replacement and tissue, it can treat serious and common type of disease without organ  surgeries and transplantation. It can treat spinal injury, heart disease, diabetes, stroke and osteoarthritis. It has been successfully used in bone marrow transplantation.

Hence, the correct answer would be the eradication of childhood illnesses

A). the eradication of childhood illnesses.

Stem cells are basic cells which divide and to function as specialized cells in human body. Children usually have weaker immune system.  The hematopoietic stem cells which are the mother cells for blood, including the red blood cells in the blood  that carries oxygen around the body and white blood cells that form the immune system. The immune system is of vital importance for the defense of bodies against viruses, bacteria and other disease causing pathogens. The hematopoietic stem cells in children having weaker immune system needs to be replaced by active hematopoietic stem cells to prevent them from illnesses.

layer 3 is younger than layer 6.