The accessory sigma factor sigmaB controls a general stress response that is thought to be important for Staphylococcus aureus survival and may contribute to virulence. The strain of choice for genetic studies, 8325-4, carries a small deletion in rsbU, which encodes a positive regulator of sigmaB activity. Consequently, to enable the role of sigmaB in virulence to be addressed, we constructed a...

A number of investigators have continued to discuss application of asynchronous techniques to rmprove the computational power of computing systems. 2.12,5,9 In fact the need for asynchronous design techniques arose in the earliest machines 26,6.2o which introduced parallel handling of bits in a number and overlapping of independent operations. The concept of distributed autonomous concurrent pr...

The relative impact of 23 mutations on biofilm formation was evaluated in the USA300, methicillin-resistant strain LAC. Mutation of sarA, atl, codY, rsbU, and sigB limited biofilm formation in comparison to the parent strain, but the limitation imposed by mutation of sarA was greater than that imposed by mutation of any of these other genes. The reduced biofilm formation of all mutants other th...

In the 1980's and 1990's, population genetic analyses based on Multilocus Enzyme Electrophoresis (MLEE) provided an initial overview of the genetic diversity of multiple bacterial species, including Salmonella enterica. The genetic diversity within S. enterica subspecies enterica according to MLEE is represented by the SARA and SARB reference collections, each consisting of 72 isolates, which h...

Complete List of Authors: Yan, Honghai; Triticeae Research Institute of Sichuan Agricultural University, Martin, Sara; Agriculture and Agri-Food Canada Bekele, Wubishet; Agriculture and Agri-Food Canada Latta, Robert; Dalhousie University, Department of Biology Diederichsen, Axel; Plant Gene Resources of Canada, Agriculture and AgriFood Canada Peng, Yuanying; Triticeae Research Institute of Sic...

the following case which had all the clinical phenomena of scarlatina. Myrtle, T., cet. 6, born in India, both parents European, resident of Saraghat, came down to Calcutta for a few days with her mother and a sick sister, who was admitted into the General Hospital for fever. The patient Myrtle lived at the house of her aunt near Ballygunge. The mother started for Sara with Myrtle a few daj's l...

Research Identifying thePeriodofaStep Change inHigh-YieldProcesses Rassoul Noorossana1,∗,†, Abbas Saghaei2, Kamran Paynabar3 and Sara Abdi4 1Industrial Engineering Department, Iran University of Science and Technology, Tehran 16844, Iran 2Industrial Engineering Department, Islamic Azad University—Science and Research Campus, Tehran, Iran 3Industrial and Operations Engineering Department, Univer...

Mary Y. Heng,1,2 Sara J. Tallaksen-Greene,2 Peter J. Detloff,3 and Roger L. Albin1,2,4 1Neuroscience Graduate Program and 2Department of Neurology, University of Michigan, Ann Arbor, Michigan 48109, 3Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, Alabama 36294, and 4Geriatrics Research, Education, and Clinical Center, Ann Arbor Veterans Admin...