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Popular Abstract in Swedish För att en multicellulär organism som männinskan ska kunna fungera måste celldelningen strikt kontrolleras. Protein som reglerar celldelning på cellulär nivå kallas för "tillväxtfaktorer". Vi har studerat ett sådant protein som kallas för transforming growth factor-beta (TGF-b). Namnet TGF-b kommer sig utav att detta protein kan transformera (omvandla) epiteliala njurceTransforming growth factor-beta (TGF-b) is a well-characterised growth regulatory factor, which acts on most cell types. This thesis has focused on the regulatory roles of TGF-b on normal lymphocytes. One interesting finding is that TGF-b acts both costimulatory and inhibitory on T-lymphocytes. The costimulatory effect depends on the presence of monocytes and is mediated by these cells. Furthermor

Popular Abstract in Swedish ”Vi kommo överens om att möten innehålla alla livets möjligheter, och att en människa som levat mycket vet mycket om möten om hon alls vet någonting.” Så uttalar den kvinnliga huvudpersonen i Mannen vid min sida (1933) sin övertygelse efter mötet med älskaren. Denna avhandling fokuserar mötet i Elin Wägners trettiotalsromaner. Genom att analysera detta vill avhandlingsfThe aim of this present thesis is to present the Utopian scheme in Elin Wägner’s novels of the nineteen-thirties: Dialogen fortsätter (1932) (“The Dialogue Continues”), Mannen vid min sida (1933) (“The Man by my Side”), Genomskådad (1937) (“Unmasked”) and Hemlighetsfull (1938) (“Mysterious”). With her authorship Wägner was aiming for a new social order, a radical change, polväxling (a shift of pol

In this work, we propose a computationally efficient time-updating algorithm for estimating the spectral content of a signal with missing samples. The algorithm extends earlier work on the topic by formulating a data-interpolation scheme reducing the required complexity to a fraction of the earlier efficient implementation, without resulting in any noticeable loss of performance for even a quite l

This thesis has investigated the importance of the VpreB1 protein in early B cell development. Mice lacking the VpreB1 protein showed normal numbers of peripheral mature B cells. The number of B220 positive cells in the bone marrow was also normal, but the amounts of pre-BI cells was increased 2-fold and the numbers of pre-B II cells were reduced by 20%. In all other respects the lymphoid compartm

The paper describes a simple analytical framework to be used when designing control algorithms for systems of specific type - in which the state derivatives go in feedback as accelerometer signals, and the overall controller explicitly exhibits an algebraic disturbance feedback loop. A simplified hydrofoil craft linear model is treated as an example. The method proposed combines all the approaches

Antibody-based microarrays have emerged as an established proteomic technology allowing multiplexed and sensitive profiling of complex proteomes, in a high-throughput and miniaturized manner. Recently, numerous applicative efforts have been pursued generating disease-associated protein signatures that now could be further explored for improved disease diagnostics, prognostics and classification.

An increased understanding of cellular uptake mechanisms of macromolecules remains an important challenge in cell biology with implications for viral infection and macromolecular drug delivery. Here, we report a strategy based on antibody-conjugated magnetic nanoparticles for the isolation of endocytic vesicles induced by heparan sulfate proteoglycans (HSPGs), key cell-surface receptors of macromo

Several bacterial species recruit the complement regulators C4b binding protein, Factor H and vitronectin resulting in resistance against the bactericidal activity of human serum. It has recently been demonstrated that bacteria also bind plasminogen, which is converted to plasmin that degrades C3b and C5. In this study, we found that a series of clinical isolates (n=58) of the respiratory pathogen

The optical design for the proposed Euro50 extremely large telescopewith integrated adaptive optics (AO) is presented. For atmosphericturbulence correction, we propose using single and dual-conjugate AOsystems working with natural and laser guide stars. The corrective shapeof the deformable mirrors (DMs) is derived from an analytical algorithmbased on minimization of the sum of the residual power

A better understanding of the hydrogeochemical evolution of groundwater in vulnerable aquifers is important for the protection of water resources. To assess groundwater chemistry, groundwater sampling was performed from different representative aquifers in 2012–2013. A Piper trilinear diagram showed that the groundwater types can be classified into Na–SO4 and Na–Cl types. Only one groundwater samp

Intergrowths of hexagonal and cubic phases of faujasitic structure have been synthesised using crown ether templates and the phase integrity monitored by high-resolution electron microscopy.