Fact Sheet Protecting Workers from the Hazards of Abrasive Blasting Materials Abrasive blasting uses compressed air or water to direct a high velocity stream of an abrasive material to clean an object or surface, remove burrs, apply a texture, or prepare a surface for the application of paint or other type of coating.
The most common gene associated with late-onset Alzheimer's disease is called apolipoprotein E (APOE). APOE has three common forms: 1  APOE e2 â the least common â appears to reduce the risk of Alzheimer's. 2  APOE e4 â a little more common â appears to increase the risk of Alzheimer's.
During prophase and metaphase of mitosis, each chromosome exists in the above state. For humans, this means that during prophase and metaphase of mitosis, a human will have 46 chromosomes, but 92 chromatids (again, remember that there are 92 chromatids because the original 46 chromosomes were duplicated during S phase of interphase).