# Tests for beta-carotene bioavailability and bioconversion to retinol (the
most significant source of Vitamin A) with deuterium-labelled Golden Rice
fed to adults in USA and a small group of children in China have been
conducted. The former were highly successful and the latter are being
evaluated at present.
# Feeding trials with human adults in China were carried out to measure the
effect of fat in the diet, on bioconversion and bioavailability.
