The Band Test. The back and front of your bra band should be level and parallel to the floor when you look at yourself from the side in a mirror. If the band is too tight, digs into your flesh or is just plain uncomfortable, it's too small.
Scanning electron micrograph of a phagocyte (yellow: neutrophil) engulfing some bacteria (orange: anthrax bacilli). Phagocytes are the white blood cells that protect the body by eating (phagocytosing) dirt, bacteria and dead or dying cells. They are important for fighting infections.
Neuroglial Cells fill spaces, support neurons, provide structural frameworks, produce myelin, and carry on phagocytosis. Four are found in the CNS and the last in the PNS. Microglial cells are small cells that phagocytize bacterial cells and cellular debris. Oligodendrocyte form myelin in the brain and spinal cord.