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  • 1
    Electronic Resource
    Electronic Resource
    Chronic exposure of goldfish-derived cell cultures to toxaphene alters the replication of Goldfish Virus-2 (1982)
    Springer
    Bulletin of environmental contamination and toxicology 29 (1982), S. 731-733 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01606114
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  • 2
    Electronic Resource
    Electronic Resource
    Toxicity of certain insecticides to protozoa (1982)
    Springer
    Bulletin of environmental contamination and toxicology 28 (1982), S. 628-631 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01605596
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  • 3
    Electronic Resource
    Electronic Resource
    Isolation of paraquat-tolerant mutants from tomato cell cultures (1982)
    Springer
    Theoretical and applied genetics 63 (1982), S. 169-176 
    Details
    ISSN: 1432-2242
    Keywords: Tomato ; Cell cultures ; Herbicidetolerant mutant ; Methyl viologen ; Paraquat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Tomato callus clones selected for the ability to grow at paraquat concentrations lethal to wild-type cells were found at an approximate frequency of 5×10−8 per viable cell. Diploid plants were regenerated from nine of the nineteen paraquat-tolerant callus clones isolated. Although some of these plants appeared normal, others had altered morphology and reduced vigor and fertility. New callus cultures initiated from these regenerated plants typically had at least a 30-fold increase over the wild type in tolerance to paraquat. Tests on callus from sexual progeny showed that the paraquat-tolerant phenotypes of clones PQT4, PQT6, and probably also PQT13 resulted from dominant nuclear mutations, but the number of loci involved is not yet known. Paraquat spray experiments indicated that slight paraquat-tolerance was expressed at the plant level in PQT13, but not in any of the other clones tested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303704
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  • 4
    Electronic Resource
    Electronic Resource
    The conductivity of aqueous zinc chloride solutions (1982)
    Springer
    Journal of applied electrochemistry 12 (1982), S. 1-5 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The conductivity of aqueous zinc chloride reaches a maximum of 10.7 Ω−1 m−1 at 3.7 M ZnCl2. Measurements on chlorinated ZnCl2 showed that at low chlorine concentrations, the conductivity increased linearly with the square root of the chlorine concentration. The increase was due to the three species: dissolved chlorine, Cl 3 − and HClO. Ammonium chloride additions increased the conductivity of aqueous zinc chloride substantially.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01112058
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  • 5
    Electronic Resource
    Electronic Resource
    Establishment of epithelial cell lines from individual rabbit lenses (1980)
    Springer
    Methods in cell science 6 (1980), S. 57-60 
    Details
    ISSN: 1573-0603
    Keywords: rabbit ; lens epithelium ; primary culture ; cell line ; lens crystallins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We describe a method of initiating primary cell cultures from lenses of rabbits by an explant-outgrowth technique. These primary cultures routinely yield epithelial cell lines when subcultured with collagenase-trypsin chicken serum. Most lines examined retain the diploid chromosome number through at least 30 passages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01666017
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  • 6
    Electronic Resource
    Electronic Resource
    Coronavirus 229E susceptibility in man-mouse hybrids is located on human chromosome 15 (1982)
    Springer
    Somatic cell and molecular genetics 8 (1982), S. 83-94 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Human coronavirus 229E, an enveloped, RNA-containing virus, causes respiratory illness in man and is serologically related to murine coronavirus JHM, which causes acute and chronic demyelination in rodents. 229E displays a species-specific host range restriction whose genetic basis was studied in human-mouse hybrids. 229E replicated in human WI-38 cells but not in three mouse cell lines tested (RAG, LM/TK−, and A9). Human coronavirus sensitivity (HCVS) was expressed as a dominant phenotype in hybrids, indicating that mouse cells do not actively suppress 229E replication. HCVS segregated concordantly with the human chromosome 15 enzyme markers mannose phosphate isomerase (MPI) and the muscle form of pyruvate kinase (PKM2), and analysis of hybrids containing an X/15 translocation [t(X;15)(p11;q11)] localized HCVS to the q11 → qter region of chromosome 15. HCVS might code for a specific surface receptor, allowing 229E to be absorbed to and received within the host cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538652
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  • 7
    Electronic Resource
    Electronic Resource
    Gene for glutathione S-transferase-1 (GST1) is on human chromosome 11 (1982)
    Springer
    Somatic cell and molecular genetics 8 (1982), S. 667-675 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The glutathione S-transferases (GST) are a group of related enzymes that can detoxify potentially carcinogenic electrophiles by conjugating them with reduced glutathione (GSH). The chromosomal location of one of the enzyme forms, GST1,reported recently to be polymorphic, was determined utilizing man-mouse somatic cell hybrids segregating human chromosomes. The expression of GST1by hybrid clones was compared with that of 34 enzyme markers representing 23 chromosomes, and karyotypes of selected cell hybrids were analyzed. The evidence indicated that GST1is assigned to chromosome 11 in humans. Utilizing an X/11 translocation segregating in hybrids, GST1was localized to the p13→ qter region of chromosome 11.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01542859
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  • 8
    Electronic Resource
    Electronic Resource
    Expression of H1 histone genes in mouse-human somatic cell hybrids (1980)
    Springer
    Somatic cell and molecular genetics 6 (1980), S. 653-665 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The synthesis of H1 histones was studied in nine mouse-human somatic cell hybrid clones containing reduced numbers of human chromosomes. The entire human genome could be accounted for karyologically and by the use of functional assays for specific enzyme markers encoded by human chromosomes. Chromatographic resolution and peptide mapping of species-specific H1 histones failed to reveal human H1 histones to a level of about 1% of total in the nine clones. In addition to the species-specific extinction of human H1 histones, effects were seen on the quantity of mouse H1 histone subtypes produced in four of the nine clones. The remaining five clones produced H1 histones qualitatively and quantitatively identical with those of the mouse parent, which was common to all nine clones. The results suggest at least two levels of control for H1 histone gene expression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538644
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  • 9
    Electronic Resource
    Electronic Resource
    Branched-chain aminotransferase deficiency in Chinese hamster cells complemented by two independent genes on human chromosomes 12 and 19 (1980)
    Springer
    Somatic cell and molecular genetics 6 (1980), S. 641-652 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Branched-chain aminotransferase (BCT) catalyzes the reversible transamination of the branched-chain α-keto acids to the branched-chainl-amino acids. Since branched-chainl-amino acids (l-isoleucine,l-leucine, andl-valine) are essential for cell growth, cells which lack BCT were unable to proliferate in media containing α-keto acids in place of the correspondingl-amino acids. CHW-1102, a Chinese hamster cell line, lacks BCT and does not grow in α-keto acid media. Somatic cell hybrids were made by the fusion of CHW-1102 (HPRT−) with several human cell lines and isolated on HAT medium. Growth assays of hybrid clones on α-keto acid selection media independent of the HAT selection medium indicated two cell hybrid phenotypes: either (1) the hybrid clone, like the parental CHW-1102, could not utilize α-keto acid media, or (2) the hybrid could proliferate on all three α-keto acid media. The ability of hybrid cells to proliferate on α-keto acid media correlated with the presence of either of two human genes which independently complemented the Chinese hamster deficiency. Two human genes, BCT1 assigned to chromosome 12 and BCT2 assigned to chromosome 19, were demonstrated to code for the expression of two molecular forms of BCT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538643
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  • 10
    Electronic Resource
    Electronic Resource
    Human β-galactosidase and α-neuraminidase deficient mucolipidosis: Genetic complementation analysis of the neuraminidase deficiency (1982)
    Springer
    Human genetics 〈Berlin〉 60 (1982), S. 158-162 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Human β-galactosidase and α-neuraminidase deficient mucolipidosis [ML(gal-neur-)] is an inherited lysosomal enzymopathy which recently was designated as a sialidosis. We analyzed the neuraminidase deficiency of this disorder with genetic complementation analyses using a heterokaryon enrichment procedure. The genetic defects of two apparent variants of this disorder complemented the defects of the neuraminidase deficiency diseases, sialidosis I and mucolipidosis I, resulting in the restoration of neuraminidase activity in heterokaryons. The neuraminidase deficiency, therefore, may not be the primary defect in ML(gal-neur-) and is not an appropriate test for determining carrier status. The clinical and biochemical characteristics of this disorder suggest that a post-translational or processing event for these enzymes may be defective. The defect, however, is different from I-cell disease and pseudo-Hurler polydystrophy, two disorders of post-translational lysosomal enzyme biosynthesis, since complementation studies demonstrated recovery of intracellular β-galactosidase and α-neuraminidase levels in heterokaryons. The lack of human β-galactosidase expression in man-mouse somatic cell hybrids formed from fibroblasts of the infantile onset type disorder suggests that the defect is not corrected by the mouse genome. The ML(gal-neur-) disorder therefore appears to be a distinct subtype of the inherited neuraminidase deficiencies in which the defect may occur in a post-translational or regulatory step which coordinately affects the expression of lysosomal β-galactosidase and α-neuraminidase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569704
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