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  • Book
    G. Singh Chhatwal, editor.
    Summary: Streptococci are Gram-positive bacteria that cause a wide spectrum of diseases, such as pharyngitis, necrotizing fasciitis and streptococcal toxic shock syndrome, as well as rheumatic fever and rheumatic heart disease as sequelae. Antibiotics alone have not been able to control the disease and in spite of many efforts an effective vaccine is not yet available. A prerequisite for novel and successful strategies for combating these bacteria is a complete understanding of the highly complex pathogenic mechanisms involved, which are analyzed in this volume. In ten chapters, prominent authors cover various aspects including streptococcal diseases and global burden, epidemiology, adaptation and transmission, and molecular mechanisms of different diseases, as well as sequelae, vaccine development and clinical management. This book will serve as a valuable reference work for scientists, students, clinicians and public health workers and provide new approaches to meeting the challenge of streptococcal diseases.
    Digital Access Springer 2013
    Access via Current topics in microbiology and immunology ; 2013; 368
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    Current topics in microbiology and immunology ; 2013; 368
    2013
  • Article
    Standring R, Williams AF.
    Biochim Biophys Acta. 1978 Mar 21;508(1):85-96.
    In purification of cell surface antigens an efficient method for preparing membrane from large numbers of cells is needed. Such a method is described for preparing membranes from rat thymocytes after lysis in the non-ionic detergent Tween-40. Cell surface antigens were recovered at a yield of 30-50%, and a purification of 30-40-fold. By contrast enzyme markers for the other cell organelles were present in the membrane fraction in very low yield. The membrane obtained with the detergent method was compared with that resulting from the best of previously describes methods involving cell lysis by shearing. The detergent method compared favourably for simplicity as well as for yield and purification, and both membrane preparations contained similar protein and glycoprotein constituents. The main glycoprotein bands of membranes from thymocytes and thoracic duct lymphocytes were identified after polyacrylamide gel electrophoresis in dodecyl sulphate. In thymocyte membrane, three main bands at apparent molecular weights of 150 000, 84 000 and 25 000 were seen, and of these the 84 000 glycoprotein did not bind to the lentil lectin. In thoracic duct lymphocyte membrane the 25 000 glycoprotein was absent and a band at 95 000 was intensified in comparison with thymocytes.
    Digital Access Access Options