Regulatory Body Substance, E.g. Insulin, Cortisol
This page is the CodyCross answer for the clue below from Medieval Times, Group 231, Puzzle 4 (King Richard).
Question is: Regulatory Body Substance, E.g. Insulin, Cortisol
and the answer is: HORMONE
Word Meaning:
HORMONE — (physiology) Any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.
Definitions from Wiktionary.