Observations on the Growth of Psittacosis Virus in Chorioallantoic Membranes by Electron Microscope.

It is the purpose of this paper to present observations obtained with the aid of the electron microscope on the development of psittacosis virus in the embryonated egg. The first phase of the problem was to study the adsorption of virus on the cell surface and its subsequent penetration into t -ie cell. The development of the infectious process was then pursued by studying infected tissue disrupted by sonic vibration and infected allantoic fluids harvested after the growth cycle was completed.