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  • 11
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    Detailed examination of a plasmoid in the distant magnetotail with ISEE 3 (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Details of an investigation of a lone plasmoid encountered by the ISEE-3 spacecraft in February 1983 are reported. ISEE-3 was then at 217 earth radii distance, in the magnetosheath, and had entered the magnetotail. Intense energetic particle, plasma and magnetic field fluctuations were detected, indicating a large electron flux moving tailward, a suprathermal proton flux, a jump in electron temperature, and inverse signatures of an increasing magnetic field. Closed magnetic field lines were also detected as were IMF field lines around the plasmoid and open field lines connecting the earth with space. The hot particles in the plasmoid are concluded to have been magnetically confined in a boundary one earth radius thick. An earthward directed beam was also detected and was found to balance the tailward flux. The origin and characteristics of the beam were not discerned.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters (ISSN 0094-8276); 11; 1046-104
    Format: text
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    NASA TECHNICAL REPORTS
  • 12
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    Simultaneous observation of the plasma sheet in the near earth and distant magnetotail - ISEE-1 and ISEE-3 (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Particle data have been acquired by the 1981-025 and 1982-019 spacecraft at geosynchronous orbit, as well as ISEE-1 in the near earth geomagnetic tail, and ISEE-3 in the distant geomagnetic tail. These observations are supplemented by ground-based magnetograms from near local midnight stations. Attention is given to a substorm recovery phase, and to observations of ion beams at the plasma sheet boundary in the near earth and distant tail, respectively, which are found to flow in opposite directions.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters (ISSN 0094-8276); 11; 1034-103
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    NASA TECHNICAL REPORTS
  • 13
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    Evolution of the earth's distant magnetotail - ISEE 3 electron plasma results (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: ISEE 3 data form the basis for a study of the evolution of the electron plasma in the magnetotail lobe and plasma sheet regions as a function of radial distance from the earth. The data were plasma electron and magnetometer measurements taken when the ISEE 3 was tailward of the earth during three different orbits. About 91,000 electron spectra were obtained in terms of the magnetosheath, lobe, plasma sheet and radial downstream distances. The lobe density peaked at 60 earth radii, while the sheet density tapered very slowly downstream. At large downstream distances (about 180 radii), the plasma bulk flow velocity increased significantly, surpassing the solar wind velocity. The bimodal electron flow angle near the earth became a single tailward flow at 180 radii.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 89; 11007-11
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    NASA TECHNICAL REPORTS
  • 14
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    Spectral characteristics of two types of low latitude aurorae (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Attention is given to two types of aurorae whose low altitude emissions seem to be due to energy loss from trapped ring current ions or electrons whose energy is of the order of 1 eV. The spectral characteristics which predominate in the first type of aurora indicate direct precipitation of ring current particles as ions, and/or indirect precipitation as energetic neutrals, following charge transfer with exospheric H or O neutrals. The spectral characteristics of the second type indicate excitation by electrons and can yield brighter displays. The time variations of the emissions are found to be closely related to fluctuations of periods shorter than an hour in the magnetograms from nearby observatories.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters (ISSN 0094-8276); 11; 572-575
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    NASA TECHNICAL REPORTS
  • 15
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    Rapid expulsion of Trichinella spiralis in suckling rats (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-05
    Description: Orally administered Trichinella spiralis muscle larvae were rapidly expelled by rat pups suckling an immune dam. The immunity was delivered in the milk; substantial resistance was conferred on normal rat pups suckled for only 24 hours by a Trichinella-immune foster mother. The pups were protected by oral or systemic administration of specific serum antibodies. When infused into a normal lactating dam, these antibodies accumulated in the serum of her suckling pups.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Appleton, J A -- McGregor, D D -- AI 14490/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 Oct 5;226(4670):70-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474191" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Suckling ; Antibodies/immunology ; Colostrum/immunology ; Female ; *Immunity, Maternally-Acquired ; Immunization, Passive ; Intestinal Diseases, Parasitic/*immunology/parasitology ; Intestinal Mucosa/parasitology ; Milk/*immunology ; Rats ; Trichinella/*immunology/physiology ; Trichinellosis/*immunology/parasitology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 16
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    Regressive events in neurogenesis (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-09-21
    Description: The development of most regions of the vertebrate nervous system includes a distinct phase of neuronal degeneration during which a substantial proportion of the neurons initially generated die. This degeneration primarily adjusts the magnitude of each neuronal population to the size or functional needs of its projection field, but in the process it seems also to eliminate many neurons whose axons have grown to either the wrong target or an inappropriate region within the target area. In addition, many connections that are initially formed are later eliminated without the death of the parent cell. In most cases such process elimination results in the removal of terminal axonal branches and hence serves as a mechanism to "fine-tune" neuronal wiring. However, there are now also several examples of the large-scale elimination of early-formed pathways as a result of the selective degeneration of long axon collaterals. Thus, far from being relatively minor aspects of neural development, these regressive phenomena are now recognized as playing a major role in determining the form of the mature nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cowan, W M -- Fawcett, J W -- O'Leary, D D -- Stanfield, B B -- EY-03653/EY/NEI NIH HHS/ -- NS-18506/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Sep 21;225(4668):1258-65.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6474175" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; Brain/*growth & development ; Cricetinae ; *Nerve Degeneration ; Nerve Growth Factors/pharmacology ; Nervous System/*growth & development ; Purkinje Cells/physiology ; Rats ; Retina/growth & development ; Superior Colliculi/growth & development ; Synapses/physiology ; Visual Pathways/growth & development
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 17
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    A new type D retrovirus isolated from macaques with an immunodeficiency syndrome (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-02-10
    Description: Macaque monkeys with the recently described acquired immunodeficiency syndrome show a marked defect in T-lymphocyte function and die with opportunistic infections and lymphoproliferative abnormalities. In the study described here a new type D retrovirus was isolated from two Macaca cyclopis with this syndrome. This virus is related to, but distinct from, Mason-Pfizer monkey virus, a type D retrovirus previously isolated from a mammary tumor of a rhesus monkey (Macaca mulatta).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniel, M D -- King, N W -- Letvin, N L -- Hunt, R D -- Sehgal, P K -- Desrosiers, R C -- R01-A1 20729/PHS HHS/ -- RR00168/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Feb 10;223(4636):602-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6695172" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Burkitt Lymphoma ; Cell Line ; Humans ; Immunologic Deficiency Syndromes/*microbiology ; Macaca ; Nucleic Acid Hybridization ; Retroviridae/genetics/immunology/*isolation & purification
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    Transmission of simian acquired immunodeficiency syndrome (SAIDS) with blood or filtered plasma (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-01-06
    Description: Simian acquired immunodeficiency syndrome (SAIDS), a disease clinically and pathologically similar to acquired immunodeficiency syndrome in humans, was transmitted from diseased rhesus monkeys (Macaca mulatta) to normal monkeys by inoculation with heparinized whole blood or plasma that had been passed through filters of 0.45 micrometer pore size. This suggests that the causative agent is small and most probably a virus. No viruses, however, were isolated by standard cell culture techniques from the blood or filtered plasma which caused SAIDS. Both cellular and humoral immunity were markedly depressed in animals with advanced SAIDS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gravell, M -- London, W T -- Houff, S A -- Madden, D L -- Dalakas, M C -- Sever, J L -- Osborn, K G -- Maul, D H -- Henrickson, R V -- Marx, P A -- RR00169/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1984 Jan 6;223(4631):74-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6318315" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/blood/immunology/*transmission ; Animals ; Blood/microbiology ; Cytomegalovirus/isolation & purification ; Filtration ; Immunoglobulins/analysis ; Lymphatic System/pathology ; Lymphocyte Activation ; Macaca mulatta ; *Plasma/microbiology ; Retroviridae/isolation & purification ; Viruses/isolation & purification
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    Immunologic inhibition of ultraviolet radiation-induced tumor suppressor cell activity (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-05-11
    Description: Long-term exposure of C3H mice to ultraviolet radiation resulted in the formation of suppressor T cells that recognize ultraviolet radiation-induced regressor skin cancers as a class before the appearance of overt tumors. Administration of monoclonal antibodies to the product of the I-Jk subregion of the major histocompatibility complex or low doses of cyclophosphamide in vivo inhibited the development or activity of these cells. This activity of the monoclonal antibody was eliminated by adsorption on B10.BR (I-Jk) but not B10.D2 (I-Jd) splenocytes. These findings provide evidence that elements expressing the I-J determinant are important in regulating the host response prior to the overt development of ultraviolet radiation-induced skin cancers and suggest novel therapeutic approaches to malignancies or other diseases involving suppressor T cells in their pathogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Granstein, R D -- Parrish, J A -- McAuliffe, D J -- Waltenbaugh, C -- Greene, M I -- 1F32 CA07014-102/CA/NCI NIH HHS/ -- AI 18072/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1984 May 11;224(4649):615-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6231725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/immunology ; Cyclophosphamide/pharmacology ; H-2 Antigens/immunology ; Mice ; Mice, Inbred C3H ; Neoplasms, Experimental/immunology ; Spleen/cytology ; T-Lymphocytes, Regulatory/drug effects/*immunology/radiation effects ; Ultraviolet Rays
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 20
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    Expression of a retrovirus encoding human HPRT in mice (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-10
    Description: Transmissible retroviruses encoding human hypoxanthine phosphoribosyltransferase (HPRT) were used to infect mouse bone marrow cells in vitro, and the infected cells were transplanted into mice. Both active human HPRT-protein and chronic HPRT-virus production were detected in hematopoietic tissue of the mice, showing transfer of the gene. These results indicate the possible use of retroviruses for somatic cell therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, A D -- Eckner, R J -- Jolly, D J -- Friedmann, T -- Verma, I M -- CA 19562/CA/NCI NIH HHS/ -- GM28223/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 10;225(4662):630-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6377498" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow/microbiology ; Bone Marrow Transplantation ; DNA, Recombinant/metabolism ; Hematopoietic Stem Cells/microbiology ; Humans ; Hypoxanthine Phosphoribosyltransferase/*genetics ; Isoenzymes/metabolism ; Lesch-Nyhan Syndrome/genetics/therapy ; Mice ; Nucleic Acid Hybridization ; Rats ; Retroviridae/enzymology/*genetics ; Spleen/microbiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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