[Electron microscopic study of old viral material].
D003594:Cytoplasmic Granules; D006652:Histological Techniques; D007304:Insect Viruses / Q000302:isolation & purification*; D008854:Microscopy, Electron; D012281:Rickettsia / Q000302:isolation & purification*
Elektronemikroskopische Untersuchung alter Virus-Materialien.