take the top of the hanging piece of tie and thread it through the loop created at the back 3 first loop to form the front loop of the bow double up the shorter end placing across the collar and hold in place with your forefinger 6 knot and tighten once through even out the ends and tighten
Cells that engulf and digest bacteria and other foreign substances  as well as debris from dead cells are called macrophage. Macrophage  also stimulate white blood cells to â¦respond to pathogens.
Another type of cell, known as an alveolar macrophage, resides on the internal surfaces of the air cavities of the alveoli, the alveolar ducts, and the bronchioles. They are mobile scavengers that serve to engulf foreign particles in the lungs, such as dust, bacteria, carbon particles, and blood cells from injuries.