Fecal specimens from apparently healthy dogs were inoculated into MK, DK, HeLa, and CP cells. Twenty-six cytopathic agents were isolated in MK, 11 in HeLa, and 4 in CP, but none in DK cells. Neutralization tests indicated that all but one of the viruses were either strains of ECHO type 6 or were closely related to it. Twenty-one of 29 dogs were carrying the virus.

From Introduction: "The present study was initiated to provide data regarding the particulate state of fission products released from uranium heated in air. It was expected that the information gained in this work would be valuable in planning experiments in which animals would be exposed to aerosols of mixed fission products and in determining the feasibility of using the effluent from a fuel specimen melt-down or oxidation in such exposures."

Report describing the materials and procedures used to obtain data necessary "for correlation with the biological effects of inhaled mixed fission products" -page 1. The study is primarily focused on the biological effects of radioactive materials inhaled by animals and the materials taken from these animals and tested with computers.

From Introduction: "In the present work, the relationship between the true MMD's calculated in this way and the MMD's which could be obtained from a microscope analysis has been determined. This has been done to establish that the comparison being made gives a valid representation of what could be encountered in practice. The comparison has then been extended to cover a wide range of particle size distributions for three different impactors."

From Abstract: "The air flow through the jet, the effect of a pre-humidifier on the water vapor content of the jet air, the cooling effect of the jet air on the generator solution, and the amount of water vapor carried away by the jet air were also determined and the results are discussed."

Report describing an small electrostatic precipitator that can take particle samples from a few centimeters of air.

Report regarding the use of dog liver cells to create a continuous cell line that were inoculated with twenty-three viruses. The methods and results of this experiment are explained herein.

From Abstract: "The importance of interspecies comparison in obtaining parameters for estimating hazards to man is discussed, using cesium metabolism as an example."

From Introduction: "These facts prompted the initiation of an effort to develop appropriate exposure equipment. The purpose of this communication is first, to describe an apparatus which, with modifications, allows pertinent information to be obtained on each individual small animal exposed and secondly, to set forth the pre- and post-exposure procedure adopted for obtaining required quantitative data regarding respiration, deposition. distribution and excretion."