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  • 1
    Electronic Resource
    Electronic Resource
    AN ADDITIONAL FAMILY OF VH SEQUENCES IN THE CHANNEL CATFISH (1991)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 18 (1991), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: A heavy chain variable region cDNA sequence of the channel catfish (Ictalurus punctatus) prototypical for a new VH family (approximately 20 or more members) is presented. The nucleotide and inferred amino acid sequences differ by 32–52% and 41–68%, respectively, from those for the already described catfish VH families.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1991.tb00038.x
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  • 2
    Electronic Resource
    Electronic Resource
    Habituation During Sleeping and Waking (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 12 (1975), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: EEG and autonomic habituation were studied during sleep stages 2 and REM. and during awake. Repeated presentations of the same stimulus to the same subjects within sleep stages and when awake permitted evaluation of habituation between tone sets within stag 2, REM, and awake, and from sleep to awake. Forty-six subjects were exposed to 800 Hz. 75 dB, 1- or 2-sec tones, presented in sets of 20 tones. During steep, there was no habituation of the EEC response. Habituation occurred for both FPR and HRR during stage 2, with no evidence of within-stage. between tone set habituation. No significant habituation occurred during REM for HRR or FPR. Evoked skin resistance responses were rare during both stage 2 and RKM. In the awake state, HRR was unresponsive but all other variables showed habituation. Tones presented during the night had no effect on the awake response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1975.tb00050.x
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  • 3
    Electronic Resource
    Electronic Resource
    Activation of the alternative complement pathway by extracts of cotton dust (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 10 (1980), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Extracts of cotton dust were tested for their ability to activate the alternative complement pathway in fresh normal human serum (NHS). Alternative pathway activation was determined by a haemolytic assay utilizing glutathione-sensitized human erythrocytes, consumption of alternative pathway components in terms of alternative pathway CH50 units and an immunoelectrophoretic assay to detect split products of activation of factor B. All assays were performed under conditions that have been shown to block the initial steps of classical pathway activation but permit activation of the alternative complement pathway. Results demonstrate that the cotton dust extracts could consume alternative complement pathway proteins in a dose-response manner. The complement activating factor is probably endotoxin since a cotton dust extract obtained by an extraction method for endotoxin yielded the greatest activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1980.tb02111.x
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of complement depletion on hypersensitivity pneumonitis lesions induced by Micropolyspora faeni antigen (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 11 (1981), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Animals sensitized by intratracheal administration of particulate Micropolyspora faeni antigen and subsequently challenged with the antigen intratracheally developed lesions of hypersensitivity pneumonitis histologically similar to those observed in man with this disease. Animals sensitized with antigen but depleted of complement with cobra venom factor prior to challenge with the antigen manifested a significant reduction in mean lesion indices when compared to a group of control animals that were not complement-depleted. These data indicate that complement is necessary for the development of pulmonary lesions of experimental hypersensitivity pneumonitis in the rabbit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1981.tb01576.x
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  • 5
    Electronic Resource
    Electronic Resource
    Transmission of a sugarcane yellow leaf phytoplasma by the delphacid planthopper Saccharosydne saccharivora, a new vector of sugarcane yellow leaf syndrome (2005)
    Oxford, UK : Blackwell Science Ltd
    Plant pathology 54 (2005), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: During surveys of sugarcane fields in western and central Cuba from December 2001 to March 2003, the delphacid planthopper Saccharosydne saccharivora was the most prevalent of the Auchenorrhyncha fauna surveyed. Individuals of S. saccharivora collected tested positive for the sugarcane yellow leaf phytoplasma (SCYLP). Saccharosydne saccharivora were reared in cages and used for experimental transmission studies of SCYLP. The S. saccharivora were given acquisition-access feeds of 72 h on SCYLP-infected canes collected from the field followed by an inoculation-access period of 15 days on healthy sugarcane seedlings. Symptoms of yellow leaf syndrome developed on 24 out of 36 plants, 7–12 months postinoculation. None of the 36 healthy seedlings that were inoculated with S. saccharivora fed on phytoplasma-free sugarcane developed symptoms. All phytoplasma-positive sugarcane and S. saccharivora samples showed identical RFLP patterns and had 99·89% similarity in their 16S/23S spacer-region sequences, but only 92·6–93·6% similarity with other phytoplasmas. Sequences were deposited with GenBank [accession numbers: 〈accessionId ref="info:ddbj-embl-genbank/AY725237"〉AY725237 (S. saccharivora) and 〈accessionId ref="info:ddbj-embl-genbank/AY257548"〉AY257548 (sugarcane)]. Phylogenetic analysis suggested that the phytoplasmas from sugarcane and S. saccharivora are putative members of a new 16Sr phytoplasma group. This is the first report of vector transmission of a phytoplasma associated with sugarcane yellow leaf syndrome and the first time that S. saccharivora has been shown to vector a phytoplasma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.2005.01242.x
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  • 6
    Electronic Resource
    Electronic Resource
    A family exhibiting heteroplasmy in the human mitochondrial DNA control region reveals both somatic mosaicism and pronounced segregation of mitotypes (1997)
    Springer
    Human genetics 〈Berlin〉 100 (1997), S. 167-171 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A family exhibiting heteroplasmy at position 16 355 in hypervariable region I of the human mtDNA control region has been identified. This family consists of a mother, daughter, and son. DNA samples extracted from blood stains, buccal swabs, and hairs from these individuals were amplified by PCR and sequenced utilizing fluoresence-labeled dye terminator chemistry in an automated DNA sequencer. In both the daughter and mother, heteroplasmy was observed in DNA extracted from blood stains, buccal swabs, and hairs. In the blood stains, the proportion of cytosine was greater than thymine in both individuals. Buccal swab extracts showed a more balanced contribution from the two nucleotides. Telogenic hair root and hair shaft samples exhibited a wide range of nucleotide contributions at this position, from predominately cytosine in some samples to predominately thymine in others. The apparent stochastic segregation of mitotypes in hair samples is discussed from a forensic viewpoint, and the mechanism of mtDNA heteroplasmy is considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004390050485
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  • 7
    Electronic Resource
    Electronic Resource
    Seasonal changes and alternation of food plant preference in some mesophyll-feeding leafhoppers (1978)
    Springer
    Oecologia 37 (1978), S. 247-255 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The life histories of two bivoltine mesophyll-feeding leafhoppers, Lindbergina aurovittata (Douglas) and Edwardsiana rosae (L.), in South Wales are described. L. aurovittata alternates between evergreen Rubus and Quercus in the first generation and various deciduous broad-leaved trees in the second. Experiments on nymphal food preferences and adult oviposition behaviour show that nymphs of both generations tend to prefer older to younger leaves, but show little species specificity. However, adults are discriminating in oviposition preferences, which change regularly and completely in alternating generations. Similar results were obtained with E. rosae. Such obligate seasonal changes in host preferences and utilization are well known amongst aphids, but previously have not been reported in leafhoppers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00344995
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  • 8
    Electronic Resource
    Electronic Resource
    A source of cutaneous maternal semiochemicals in the mink? (1988)
    Springer
    Cellular and molecular life sciences 44 (1988), S. 79-81 
    Details
    ISSN: 1420-9071
    Keywords: Mink ; apocrine glands ; pheromones ; maternal behavior ; semiochemical
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Unique hypertrophic apocrine sweat glands are described in the neck, perineal and inguinal skin of mink kits. These glands enlarge after birth, only to regress rapidly and become vestigal by weaning. No similar phenomenon has been recognized before in mammals. Behavioral studies indicate a possible role for the glandular secretion in maternal recognition of the young.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01960256
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  • 9
    Electronic Resource
    Electronic Resource
    Oviposition behaviour as an ecological factor in woodland canopy leafhoppers (1978)
    Springer
    Entomologia experimentalis et applicata 24 (1978), S. 301-309 
    Details
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Lors de la ponte, les insectes phytophages font généralement une distinction entre les différentes plantes qui s'offrent à eux sur le terrain. Les cicadelles associées aux arbres ont souvent des systèmes de ponte spécifiques sur leur plantes-hôtes. Des expériences avec les cicadelles oligophages se nourrissant de mésophylle,Aguriahana stellulata, Edwardsiana rosae, Lindbergina aurovittata etRibautiana tenerrima, et les monophagesR. scalaris etR. ulmi montrent que les nymphes de toutes ces espèces peuvent se nourrir et survivre sur des espèces végétales plus nombreuses que celles sur lesquelles on les trouve sur le terrain. Les nymphes deR. ulmi ont montré une préférence marquée pour les feuilles deCarpinus lorsqu'elles leur ont été présentées avec celles de leur hôte habituel,Ulmus, dans des conditions expérimentales. Il n'y a pas de preuve que la nourriture absorbée par les nymphes les conditionnent quant à leurs préférences alimentaires on leurs préférences de ponte ultérieures. On en conclut que les comportements de ponte héréditaires, chez les cicadelles et chez beaucoup d'autres insectes phytophages, sont importants dans l'écologie et dans l'évolution des interactions insecte/plante-hôte.
    Notes: Abstract The role of female oviposition behaviour in determining the food plant preferences of phytophagous insects observed in the field is reviewed. Complex patterns of food plant relationships in leafhoppers associated with trees in Britain are discussed. Some species are polyphagous, others are oligophagous and most are monophagous. Experiments on feeding of nymphs and oviposition behaviour of adult leafhoppers give little support for theories which invoke the nymphal conditioning of food preferences and adult oviposition. Distinctive patterns of oviposition behaviour are important factors in the ecology and evolution of these insects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02385078
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