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K Kohlmann

Publications and source records attributed to K Kohlmann.

6 recordsLinked to original sources
PubMed2003

Cell-mediated immunity in yellow forms of rainbow trout.

The aim of the present study was to investigate possible pleiotropic effects of the genotypes controlling the palomino and albino coloration on blood phagocyte and lymphocyte activity. The results showed that the wild coloured trout has a higher metabolic and potential killing activity of blood phagocytes, compared to albino and palomino coloured trout. The proliferative response of blood lymphocytes stimulated by ConA or LPS indicated a similar pattern. The results showed that lymphocyte proliferation was statistically significantly higher in wild coloured trout, compared to albino and palomino trout.

Animals↗
PubMed2001

Matrilinear phylogeography of Atlantic salmon (Salmo salar L.) in Europe and postglacial colonization of the Baltic Sea area.

Sixty-four samples from 46 salmon populations totalling 2369 specimens were used for polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis of the mitochondrial ND1 region. The final analyses included 3095 specimens from 60 populations in Northern Europe. A subsample was analysed by RFLP of ND3/4/5/6. Representative RFLP haplotypes from different parts of the distribution area were sequenced and the phylogeny of European haplotypes and their relations to the North American lineage was described. The four common European haplotypes derive from the ancestral ND1-BBBA (rooting the European clade to the North American) by one-step substitutions: AAAA < AABA < BBBA > BBBB. The Swedish west-coast populations differ from the geographically close southern Baltic, indicating absence of inward and limited outward gene flow through the Danish straits during the last 8000 years. Within the Baltic Sea, only three ND1 haplotypes were detected and there was no variation for ND3/4/5/6. In the whole southern Baltic and in lakes Vänern, Ladoga and Onega the haplotype AABA dominated. Proposed postglacial colonization routes to the Baltic Sea are discussed in relation to the haplotype distribution pattern.

Animals↗
PubMed1995

Electrochromatographic separation of proteins.

We have developed a modified electrochromatography system which minimizes Joule heating at electric field strengths up to 125 V/cm. A non-linear equilibrium model is described which incorporates electrophoretic mobility, hydrodynamic flow velocity, and an electrically induced concentration polarization at the surface of the stationary phase. This model is able to provide useful estimates of protein retention time and velocity in a column packed with Sephadex gel and subjected to an electric field. A correlation of electrophoretic mobility of peptide and proteins with respect to their charge, molecular mass, and asymmetry enables the selection of solute target molecules for electrochromatographic separations. Good separation of protein mixtures have been obtained.

Chromatography, High Pressure Liquid↗
PubMed1994

Cellulose pretreatments of lignocellulosic substrates.

Cellulose in inedible plant materials, forestry residues, and municipal wastes must be pretreated to disrupt its physical structure, thereby making its hydrolysis to glucose practical. Developments since 1991 are summarized.

Acids↗
PubMedDate not supplied

Genetic control of glucosephosphate isomerase (GPI) in common carp (Cyprinus carpio L.).

In common carp, a freshwater fish species of tetraploid origin, GPI enzymes are present in two variants: GPI-A and GPI-B. GPI-A is coded by two loci segregating for two (GPI-A 1*) and six (GPI-A2*) alleles. Experimental crosses of the ornamental (Koi) variety of common carp revealed that GPI-B is coded by only one locus (GPI-B*). Another GPI-B* locus must have been silenced in the process of functional diploidization. It was also shown that the GPI-A2* locus segregated independently from the GPI-B* locus, demonstrating that the loci are located on different chromosomes.

Alleles↗