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  • 1
    Electronic Resource
    Electronic Resource
    Nuclear Misbehavior in an Aberrant Inbred Tetrahymena (1964)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 11 (1964), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Breeding anomalies in an inbred strain (B1) of syngen 1, Tetrahymena pyriformis, are traced to aberrant chromosomal constitutions of the micronuclei. The origins of the micronuclear defects have not been established, but they probably arise in much the same manner as those observed earlier in “semi-amicronucleate” clones, except that they occur later and in lower frequencies. The abnormal nuclei are impaired in their ability to carry out the maneuvers required for normal conjugation; some are blocked in MI, most after MII; the occasional cells in which nuclear reorganization is completed have visibly defective macronuclear anlagen and are inviable. When crossed to normal strains, nuclear misbehavior is induced in them and again very few if any viable exconjugants are produced. The details of the aberrations are discussed with reference to the patterns of nucleocytoplasmic interaction in conjugation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1964.tb01780.x
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  • 2
    Electronic Resource
    Electronic Resource
    Reticulo-Endothelial Activity in Haemamoeba (=Plasmodium) gallinacea Infections (1963)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 10 (1963), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. The effect of H. gallinacea infection on the phagocytic activity of the reticulo-endothelial system in chicks has been investigated. Changes occurring in the pattern of R.E. activity show that there is initial stimulation of phagocytosis within 24 hr and that this increases up to the 4th and 5th days after which time parasites appear in the blood. Thereafter there is a rapid drop in R.E. activity with a proportional increase in parasitaemia following which death ensues. The importance of the protective value of the reticulo-endothelial system is indicated and it is suggested that a toxin produced by the parasites or by their break-down products is the likely cause of phagocytic depression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1963.tb01643.x
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  • 3
    Electronic Resource
    Electronic Resource
    Comparative Corticotype Analyses in Tetrahymena (1967)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 14 (1967), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Strains of Tetrahymena pyriformis, including amicronucleate strain GL and representatives of 9 syngens, have been examined to determine the patterns whereby cortical features vary with numbers of ciliary meridians. The characteristics scored were the positions of the contractile vacuole pores (CVP's), the extent of the area within which CVP's develop, the incidence of supernumerary CVP's, and the number of postoral meridians. Intrasyngenic comparisons were possible in 6 syngens and permitted an assessment of intrasyngenic variation for these characteristics. Only the CVP positions appear to be reasonably constant within syngens in the strains examined. On the basis of this criterion the syngens can be arrayed in an approximate order of 1, 3, 7, 6, 8, 9, 2, 5, GL and 4; the angle formed between the central axis, the stomatogenic meridian and the CVP's is most acute in syngen 1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1967.tb02064.x
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  • 4
    Electronic Resource
    Electronic Resource
    The Inheritance of H-L Serotype Differences at Conjugation in Tetrahymena (1963)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 10 (1963), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Cells of variety 1, Tetrahymena pyriformis, manifest different immobilization antigens when grown at 15d̀ and 25d̀C. These differences are partially maintained for a period of growth at an intermediate temperature. Crosses were performed at intermediate temperatures between parental cultures conditioned to high and low temperatures and the antigenic characteristics of their progeny were determined. When conjugation is abortive and paired cells do not complete conjugation, the cells separate and produce clones with distinctive serotypes. When conjugation is completed, however, no systematic differences between exconjugants can be demonstrated. These results differ from those obtained under comparable circumstances in Paramecium aurelia, and fail to support the idea that the cytoplasm plays a significant role in the maintenance of serotypes in Tetrahymena.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1963.tb01654.x
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  • 5
    Electronic Resource
    Electronic Resource
    Corticotypic Technics in Tetrahymena Taxonomy (1966)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 13 (1966), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Strains of Tetrahymena pyriformis have a cryptic polymorphism reflected in the production of individuals with different numbers of ciliary rows (meridians). Within a strain certain cortical features—particularly the numbers and positions of contractile vacuole pores, the numbers of postoral meridians, and the stability of the cell type-vary in a systematic way with meridianal multiplicity. A preliminary survey of strains representing 10 genetically isolated groups reveals several patterns of correlation of cortical elements. All the groups examined appear to be distinctive with the possible exception of the strains from syngens 6 and 8, which are known to be genetically compatible under certain conditions. These studies encourage a belief that the heterogeneous assembly of genetic species now sheltered under the taxonomic umbrella of T. pyriformis can soon be given independent morphologic identification and appropriate specific designations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1966.tb01946.x
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  • 6
    Electronic Resource
    Electronic Resource
    The Relationship between Arginine, Citrulline and Ornithine in Tetrahymena pyriformis (1965)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 12 (1965), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Studies on the metabolism or arginine, citrulline, and ornithine by Tetrahymena pyriformis confirmed that these compounds do not participate in a urea cycle in this organism. No evidence for the enzymes of the cycle or for the presence of urea or urease was found. However, conversion of arginine to ornithine takes place. This system consists of two enzymes, arginine desimidase and a citrulline-hydrolyzing enzyme. This is different from the arginine dihydrolase enzymes reported for bacteria and yeast, since no labile phosphate is produced in the conversion of citrulline to ornithine. The enzyme responsible for the latter conversion was purified 44-fold. The pH optimum of the enzyme, its substrate specificity, and the effect of inhibitors on its activity were investigated. The enzyme appears entirely hydrolytic in nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1965.tb01848.x
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  • 7
    Electronic Resource
    Electronic Resource
    Reticulo-Endothelial Activity in Mice Infected with Plasmodium vinckei (1964)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 11 (1964), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. The effect of P. vinckei infections on the phagocytic activity of the reticulo-endothelial system in mice has been investigated. Changes occurring in the pattern of R.E. activity show that there is slight stimulation of phagocytosis 24 hours after the initiation of the infection at which time parasites appear in the blood. The stimulation continues and reaches a peak on the 3rd day, following which it drops to subnormal levels by the 6th and 7th days when the animals die. The parasitaemia rises abruptly from the 4th day onwards, this increase bearing a direct relationship to the fall in the level of phagocytic activity. The changes which occur during this infection are compared with those previously reported for Plasmodium gallinaceum in chicks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1964.tb01746.x
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  • 8
    Electronic Resource
    Electronic Resource
    Patterns of Cortical Stability in Tetrahymena (1968)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 15 (1968), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. A simplified technic is presented for determining clonal stability patterns for numbers of ciliary rows in Tetrahymena. The technic involves plotting the variance of meridian number against the mean number of meridians. By this procedure strains of different syngens, difficult to discriminate on other grounds, may sometimes be shown to be distinctive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1968.tb02094.x
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  • 9
    Electronic Resource
    Electronic Resource
    BIOLOGICAL MONITORING OF BLUEGILL ACTIVITY (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 19 (1983), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Bluegills were exposed for one hour to 0.2 or 2.3 mg/liter water soluble fraction (WSF) of JP-4 in a testing chamber designed to contain individual fish. A strain gage paddle was used to monitor activity. Whole body movement of individual fish did not change appreciably during exposure to either 0.2 or 2.3 mg/liter WSF-JP-4. Strength of pectoral fin movement, accounting for the majority of the fish behavior, increased in six of ten individuals exposed to 2.3 mg/liter WSF-JP-4. Pectoral fanning may be a useful parameter to indirectly assess water quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1983.tb05316.x
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  • 10
    Electronic Resource
    Electronic Resource
    Citrus Bitter Principles IV. Occurrence of Limonin in Grapefruit Juice (1965)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 30 (1965), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1965.tb01857.x
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