Which is an immune response? the iris of the eye narrows when the eyes are exposed to bright light. langerhans cells transport harmful substances to white blood cells. muscles under the skin contract rapidly to adjust the body's internal temperature. t cells signal b cells to adjust the ph of the blood.

Option). Langerhans cells transport harmful substances to white blood cells.

Explanation:

An immune response can be defined as a reaction of cells and components of body against the foreign or abnormal substances. Langerhans cells are cells of epithelial membrane of digestive, urogenital, and respiratory tracts.

Langerhans cells represent a type of dendritic cells. Dendritic cells are immune cells that process and represent the antigen or their components on cell surface to the T cells.

Hence, transport of harmful substances by Langerhans cells to the T cells (white blood cells) is an example of immune response.

Thus, the correct answer is second option.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

not only is it colder, it also becomes darker, less salty, and more dense.