H substance

(redirected from released substance)
Also found in: Medical.

H substance

[′āch ‚səb·stəns]
(biochemistry)
An agent similar to histamine and believed to play a role in local blood vessel response in tissue damage.
References in periodicals archive ?
While mercury was the most frequently released substance in the home, it did not result in as many victims as bleach.
deep filters made of cellulose, inorganic filtration additives impregnated with a cation resin, which has a positive charge or a "zeta potential", which helps to reduce pyrogenicity; have an insignificantly low level of released substances.
Most of the released substances identified are anyway used in a wide variety of common uses and it would be important to establish the intensity or duration of exposure that could trigger carcinogenic reaction.