And endocrine cell is an outer cell i think and a target cell is an antibody which helps attack viruses
Answer: The correct answer is hormone
Explanation:
A hormone is a chemical substance produced by an organ (usually called gland) and on production is released directly into the bloodstream to be transported to another part of the body (usually called target organ) where its exert its function.
An example of hormone is thyroxine, it is produced by the thyroid gland in the neck and exert function on almost all cells of the body
