when oviducts from vitamin a-depleted and vitamin a-repleted immature chicks given oestrogen injections for 6 consecutive days were incubated with [ 3h ] retinyl acetate , uptake of the radioactivity in the nuclei of the vitamin a-depleted tissue was severalfold higher than that in the nuclei from the vitamin a-repleted tissue .
C0073109
retinyl acetate
C0042839
vitamin a