Psilogramma menephron granulosis virus (PmGV) has been studied with respect to its morphological structure. The results indicate that PmGV inclusion bodies are elliptical or oval, with a more uniform size measured to be 224—276×373—522 nm. The virion is banana-shaped, averaging about 66×269 nm. Under electronic microscope, the granulosis body protein lattice has a pattern of regular dots and rows. The virion is a kind of single-embedded baculovirus. The viral DNA released from virions of PmGV is found to be a circular or open circular molecule with an average countour ...
