Fig. 8. VSVG-containing vesicles collect and undergo exocytosis near furrow bases.
Unfertilized eggs were allowed several hours to express injected VSVG mRNA,
and then were fertilized and fixed part way through the fourth cleavage.
Exocytosis of labeled vesicles was exclusively along nascent basolateral
surfaces lining the blastocoel. Vesicle size ranges up to 2.5 µm. Bar, 10
µm.