Growth factors such as granulocyte colony stimulating factor (G-CSF), granulocytes-macrophages colony stimulating factor (GM-CSF), colony stimulating factor-1(CSF-1), and erythropoietin are currently being investigated as therapeutics for cancer, certain autoimmune diseases, ischemic insults and neurodegenerative diseases [10], [29], [30]. Here, CSF1 is linked to neurodegenerative disease.