THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Some macrophages act as scavengers, removing dead or necrotic cells while others provide host immunity by engulfing microbes. An ingested microbe or dead cell is engulfed in what is called a phagosome, a vesicle which is formed around the microbe by the cell membrane.

Detailed explanation-2: -Phagocytes such as neutrophils, macrophages, and dendritic cells make a bridge between specific bacterial surface antigens and cellular receptors. Following this bridge, membrane protrusions surround the bacteria and absorb the bacteria into the phagosome, which is formed by the fusion of cell membranes [9].

Detailed explanation-3: -Mucosa-associated lymphoid tissue is located in anatomically defined microcompartments throughout the gut. The mucosa-associated lymphoid tissues lining the gut are known as gut-associated lymphoid tissue or GALT.