T cells
The immune response to a transplanted organ consists of both cellular (lymphocyte mediated) and humoral (antibody mediated) mechanisms. Although other cell types are also involved, the T cells are central in the rejection of grafts. The rejection reaction consists of the sensitization stage and the effector stage.
Layer y because it’s sides and numbers
Explanation:
Biological macromolecule
A large, organic molecule such as carbohydrates, lipids, proteins, and nucleic acids.
Plant Ydoes not have enough auxin