The ants herd aphids for the substance they secrete. The wound will secrete pus for a while.
Advanced English Dictionary
+verb[VN] 1 (of part of the body or a plant) to produce a liquid substance: Insulin is secreted by the pancreas. 2 ~ sth (in sth) (formal) to hide sth, especially sth small: The drugs were secreted in the lining of his case.
Random quote: Intuition is the very force or activity of the soul in its experience through whatever has been the experience of the soul itself.: Henry Reed