Plasmids of 'Legionella' Species (2006)
Mikesell, Perry, Knudson, Gregory B.
Plasmids are extrachromosomal genetic elements that normally are not essential for survival of the host, but often carry genes which allow the host to compete more successfully in adverse...
Identification of Vaccine Resistant Isolates of Bacillus anthracis (2003)
Little, Stephen F., Knudson, Gregory B.
Several strains of Bacillus anthracis have been reported previously to cause fatal infection in immunized guinea pigs. In this study, guinea pigs were immunized with either a protective antigen...
Ivins, Bruce E., Welkos, Susan L., Knudson, Gregory B., Little, Stephen F.
The safety and efficacy of five prototype, live anthrax vaccines were studied in Hartly guinea pigs and CBA/J and A/J mice. Two of the strains, Bacillus anthracis FD111 and FD112, are Aro-mutants...
The effects of toxin- and capsule-encoding plasmids on the kinetics of UV inactivation of various strains of Bacillus anthracis were investigated. Plasmids pX01 and pX02 had no effect on bacterial UV...
Plasmid Detection in Legionella pneumophila and Legionella-like Organisms. (2002)
Mikesell,Perry, Ezzell,J. W., Knudson,Gregory B.
Five strains of bacteria, designated Legionella-like organisms, and one strain of Legionella pneumophila were examined for the presence of extrachromosomal deoxyribonucleic acid. Cryptic plasmids...
Plasmid Isolation in Legionella pneumophila and Legionella-like Organisms. (2002)
Mikesell,Perry, Ezzell,J. W., Knudson,Gregory B.
Agarose gel electrophoresis was employed to screen nine strains of Legionella-like bacteria and one strain of Legionella pneumophila for the presence of extrachromosomal deoxyribonucleic acid....
A Plasmid in Legionella pneumophila, (2002)
Knudson,Gregory B., Mikesell,Perry
Supersedes report dated 21 Apr 80, AD-A084 701.
Treatment of Anthrax in Man: Historical and Current Concepts (2002)
A critical evaluation of the currently recommended treatments of cutaneous, inhalation, and gastrointestinal anthrax is presented with an historical perspective. The importance of early diagnosis and...
Absence of Mutagenic Activity of Hycanthone in Serratia marcescens, (2002)
Knudson,Gregory B., Belser,William L.
Hycanthone methanesulfonate, an antischistosomal agent, is an effective frameshift mutagen in Salmonella typhimurium but did not induce auxotrophic mutations in Serratia marcescens HY, even at high...
Little,Stephen F., Knudson,Gregory B.
Several strains of Bacillus anthracis have been reported previously to cause fatal infection in immunized guinea pigs. In this study, guinea pigs were immunized with either a protective antigen...
Plasmids of Legionella Species. (1998)
Mikesell,Perry, Knudson,Gregory B.
Plasmids are extrachromosomal genetic elements of bacteria that are not essential for survival of the host under most circumstances but often carry genes that allow the host to compete more...
Turell, Michael J., Knudson, Gregory B.
We evaluated the potential of stable flies, Stomoxys calcitrans, and two species of mosquitoes, Aedes aegypti and Aedes taeniorhynchus, to transmit Bacillus anthracis Vollum 1B mechanically. After...
Transponson Tn916 Mutagenesis in Bacillus anthracis, (1998)
Ivins, Bruce E., Welkos, Susan L., Knudson, Gregory B., LeBlanc, Donald J.
Mutagenesis of Bacillus anthracis by the streptococcal tetracycline resistance transponson, Tn916, is described. Tn916 was transferred from Streptococcus faecalis strain DS16C1 to B. anthracis VNR-1...
Little, Stephen F., Knudson, Gregory B.
Several strains of Bacillus anthracis have been reported previously to cause fatal infection in immunized guinea pigs. In this study, guinea pigs were immunized with either a protective antigen...
In Vitro Development of Resistance to Ofloxacin and Doxycycline in Bacillus anthracis Sterne
Choe, Chong H., Bouhaouala, Selim S., Brook, Itzhak, Elliott, Thomas B., Knudson, Gregory B.
Elliott, Thomas B., Brook, Itzhak, Harding, Rita A., Bouhaouala, S. Samy, Shoemaker, Michael O., Knudson, Gregory B.
Challenge with both nonlethal ionizing radiation and toxigenic Bacillus anthracis spores increases the rate of mortality from a mixed bacterial infection. If biological weapons, such as B. anthracis...
In Vitro Development of Resistance to Ofloxacin and Doxycycline in Bacillus anthracis Sterne
Choe, Chong H., Bouhaouala, Selim S., Brook, Itzhak, Elliott, Thomas B., Knudson, Gregory B.
Elliott, Thomas B., Brook, Itzhak, Harding, Rita A., Bouhaouala, S. Samy, Shoemaker, Michael O., Knudson, Gregory B.
Challenge with both nonlethal ionizing radiation and toxigenic Bacillus anthracis spores increases the rate of mortality from a mixed bacterial infection. If biological weapons, such as B. anthracis...