The role of active cytotoxic t cells is to attack see concept 43.3 (page) the role of active cytotoxic t cells is to attack see concept 43.3 (page) extracellular viruses and bacteria complement proteins circulating proteins circulating antibodies body cells that have been infected

Body cells that have been infected

Immune system is a complex arrangement of cells that functions as the eliminating system  in the body by reconizing elements that are not safe in the body. A humoral and cellular can be differentiated. The key players of adaptive cellular immune responses are T lymphocytes. The effector cells are the cytotoxic T lymphocytes. These type of cells express t cell receptors that can recognize  an antigen. This will allow them to attach and tag the antigen as a possible threat in the body.

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.

Because people are wasting it