scholarly journals PHYSICAL, CHEMICAL, AND BIOLOGICAL STUDIES ON THE VIRUS OF VESICULAR STOMATITIS OF HORSES

1927 ◽  
Vol 45 (6) ◽  
pp. 969-981 ◽  
Author(s):  
Peter K. Olitsky
Keyword(s):  
Foot And Mouth Disease ◽  
Ultra Violet ◽  
Taxonomic Study ◽  
Violet Light ◽  
Physical Chemical ◽  
Biological Studies ◽  
Chemical Constitution ◽  
Vesicular Stomatitis ◽  
Chemical Character ◽  
Generic Connection

A taxonomic study of the virus of vesicular stomatitis is presented along with evidence additional to that already reported1 to show the similarity of this virus to that of foot-and-mouth disease. The connection of the two is discussed and the deduction drawn that their generic relationship is close. On the contrary, the differences between these two viruses and the herpetic are sufficiently marked to indicate a lack of generic connection among the three. The results of a comparative study on the effects of particular wave-lengths and energies of monochromatic ultra-violet light on the virus and on Staphylococcus aureus reveal that the adsorption of specific energies by the two is parallel. Since the adsorption of specific energies is an index of chemical character, these experiments suggest that the virus is similar in character and chemical constitution to bacterial protoplasm.

scholarly journals PROPERTIES OF THE CAUSATIVE AGENT OF A CHICKEN TUMOR

1932 ◽  
Vol 55 (3) ◽  
pp. 441-444 ◽  
Author(s):  
Ernest Sturm ◽  
Frederick L. Gates ◽  
James B. Murphy
Keyword(s):  
Spectral Analysis ◽  
Incident Light ◽  
Common Factor ◽  
Ultra Violet ◽  
Biological Cells ◽  
Spectral Absorption ◽  
Violet Light ◽  
Chemical Character ◽  
Coefficients Of Absorption ◽  
Tumor Agent

Even though part of the energy of the incident light is probably absorbed by chemical entities which play no part in the specific reaction of inactivation, nevertheless the wave lengths most active in destroying biological cells or agents will presumably be found to be among those absorbed in the highest proportion. This would indicate that the curves here presented are approximately reciprocal to the coefficients of absorption of particular substances, the destruction of which caused the inactivation of the agents or the death of the cells. The similarity between the curves for bacteria, virus, and phage, both in shape and in total involved energies, suggests the presence of a common factor, or of closely related chemical entities, sensitive to ultra-violet light, whereas the data for the tumor agent suggest that its inactivation is due to the destruction of a substance having an essentially different spectral absorption, and therefore of a different chemical character. While the amount of ultra-violet energy required to affect the tumor agent is great, it is still less than that involved in the inactivation of some of the enzymes (7). A study is under way to compare the deduced spectral analysis with the actual coefficients of absorption of the highly purified tumor agent.

ULTRA-VIOLET LIGHT

BMJ ◽  
1925 ◽  
Vol 1 (3364) ◽  
pp. 1152-1153
Author(s):  
A. Blakiston
Keyword(s):  
Ultra Violet ◽  
Ultra Violet Light ◽  
Violet Light

ULTRA-VIOLET LIGHT

BMJ ◽  
1925 ◽  
Vol 2 (3376) ◽  
pp. 495-495 ◽  
Author(s):  
A. Blakiston
Keyword(s):  
Ultra Violet ◽  
Ultra Violet Light ◽  
Violet Light
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