RNA and Protein in Nucleolar Structures of Dragonfly Oocytes

Science  15 Nov 1968:
Vol. 162, Issue 3855, pp. 803-805
DOI: 10.1126/science.162.3855.803


Dragonfly and damselfly oocytes regularly contain two nucleolus like bodies of different sizes, a primary nucleolus and a secondary nucleolus. The primary nucleolus stains more deeply with RNA stains than with an arginine stain; the seconidary nuicleolus stains conzversely. The primary nulcleolus incorporates uridine under all conditions tested; the secondary, only after precautions have been taken to preserve soluble RNA. Both inicorporate lysine.