1. Health experts focus on three fatty substances , or lipids, in the blood. 2. The blockage results from deposits of fatty substances in the arteries. 3. Plaque forms when too much cholesterol, or fatty substances , circulates in the bloodstream. 4. In this case, the target tissue is myelin, a fatty substance that coats nerve fibers. 5. Scientists mix genes with a fatty substance and inject the concoction directly into tumor cells. 6. Oligodendrocytes are glial cells that produce a fatty substance called myelin, which wraps around axons in layers. 7. It is characterized by a remodeling of arteries leading to subendothelial accumulation of fatty substances called plaques. 8. Those with Fabry's disease are lacking an enzyme that breaks down a fatty substance in the body. 9. Bone marrow is the soft, fatty substance found primarily in long bones, like the shin and shanks. 10. The A betas and A deltas are wrapped in myelin, a fatty substance that acts like an insulator.