MeSH definition : Chemical substances, excreted by an organism into the environment, that elicit behavioral
or physiological responses from other organisms of the same species. Perception of
these chemical signals may be olfactory or by contact.;
Chemical substances, excreted by an organism into the environment, that elicit behavioral
or physiological responses from other organisms of the same species. Perception of
these chemical signals may be olfactory or by contact.