Search for dissertations about: "clones"

Showing result 16 - 20 of 313 swedish dissertations containing the word clones.

  1. 16. Vancomycin resistant enterococci in Swedish broilers : emergence, epidemiology and elimination

    Author : Oskar Nilsson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []

    Abstract : Vancomycin resistance enterococci (VRE) are an important cause of nosocomial infections. Presence of VRE in farm animals constitute a reservoir of resistance that can spread to humans via the food-chain and is due to extensive use of the growth promoter avoparcin conferring cross-resistance to vancomycin. READ MORE

  2. 17. Defence and signalling in Potato-Phytophthora infestans interactions

    Author : Ashfaq Ali; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Phytophthora infestans; Plant defence; hypersensitive response; resistance; susceptibility;

    Abstract : Potato is one of the major food crops and its yield is severely affected by late blight disease caused by Phytophthora infestans. P. infestans has the ability to manipulate plant defence signalling by secreting effector molecules causing so called effector triggered susceptibility. READ MORE

  3. 18. HPRT mutational spectra and microsatellite DNA instability in HNPCC and lung cancer patients

    Author : Peter Hackman; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Somatic gene mutation; mutational spectra; HPRT gene; lung cancer; smoking; hMLH1 gene; HNPCC; microsatellite instability; mismatch repair; T-cells;

    Abstract : The, general aims of this work have been to explore the use of microsatellite DNA length variation and mutational spectra of the hypoxanthine guanine phosphoribosyltransferase (HPRT) locus in T-cells as tools for a better understanding of human somatic mutagenesis in vivo. In particular (a) how inherited mismatch repair (MMR) deficiency may affect the stability of microsatellite DNA and the mutational spectrum at the HPRT locus, and (b) how the mutational spectrum at the HPRT locus is influenced by smoking, and by predisposition to lung cancer among never smokers. READ MORE

  4. 19. Immunity against porcine islet xenografts in man

    Author : Ellinor Lindeborg; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Pig islets xenotransplantation; Type 1 diabetes; xenoimmune antibodies; IgG1; T cells.;

    Abstract : Due to the lack of organs for clinical transplantation, alternative sources have been investigated. One solution to this shortage could be xenotransplantation, i.e. the transplantation of organs/cells across species barriers. READ MORE

  5. 20. T cell dependent B lymphocyte activation, growth and maturation : the role of lymphokines

    Author : Sven Pettersson; Umeå universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TH cell activated B- cell growth maturation B-cell growth factor BSF-pI B-cel1 maturation factor s BMA neonatal B-cell prol iferation anti body secretion;

    Abstract : The present work concerns the regulation of B cell activation, growth and terminal differentiation of helper T cells.T cell dependent (TD) B cell activation requires physical cell to cell contact between competent helper T cells (TH) and B cells and the recognition of MHC Class II antigens. READ MORE