Figure 6.

Labeling of fertilized eggs incubated in presence of ³H-glucosamine during the whole in vitro maturation and collected 20 hr after transfer in vivo in an inseminated gilt. bar = 10 μm a : heavy PVS (*) labeling still visible.b : ooplasm labeling around a pronucleus (N).c : similar labeling in an oocyte treated with Tunicamycin during maturation.