Assertion: carotene's activity | /r/CapableOf | put stress
Facets:
value: on the immune system
type: TRANSITIVE-OBJECT
value: given synthetic betacarotene
type: OTHER
Source sentences:
text: The biological activity of synthetic betacarotene is much lower than that of the natural complexes of carotenes and, in fact, may put stress on the immune system Studies with humans and rats given synthetic betacarotene found an increase in white blood cells.