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.
Macrophages are the type of white blood cells that eat harmful molecules by engulfing them. Macrophages detect the invading substances by special antigens that harmful microbes carry on their surface. Macrophages destroy most of the microbe, except for these antigens, which they deliver to lymph nodes.