Search Results - "LAUZON, R. J"

Evidence for a Programmed Life Span in a Colonial Protochordate by Rinkevich, Baruch, Lauzon, Robert J., Byron W. M. Brown, Weissman, Irving L.

“…The variety of theories that have attempted to define the mechanisms of aging and life span can be broadly divided into two alternative but nonexclusive…”
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A Morphological Study of Nonrandom Senescence in a Colonial Urochordate by Lauzon, Robert J., Rinkevich, Baruch, Patton, C. W., Weissman, Irving L.

“…Botryllus schlosseri is a clonally modular ascidian, in which individuals (zooids) have a finite life span that is intimately associated with a weekly budding…”
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A morphological and immunohistochemical study of programmed cell death in Botryllus schlosseri (Tunicata, Ascidiacea) by LAUZON, R. J, PATTON, C. W, WEISSMAN, I. L

“…The blastogenic cycle of the colonial ascidian Botryllus schlosseri concludes in a phase of selective cell and zooid death called takeover. Every week, all…”
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Isolation of Biologically Functional RNA during Programmed Death of a Colonial Ascidian by Chang, Wen-Teh, Lauzon, Robert J.

“…The blastogenic (asexual) cycle of the colonial ascidian Botryllus schlosseri (Tunicata, Ascidiaceae) concludes in a cyclical phase of programmed cell and…”
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An expanded population of natural killer cells in mice with severe combined immunodeficiency (SCID) lack rearrangement and expression of T cell receptor genes by LAUZON, R. J, SIMINOVITCH, K. A, FULOP, G. M, PHILLIPS, R. A, RODER, J. C

“…Mice with severe combined immunodeficiency syndrome (SCID) exhibit an impairment in both T and B cell maturation, whereas myelopoiesis remains unaffected. We…”
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16S Mitochondrial Ribosomal RNA Degradation Is Associated with Apoptosis by Crawford, Dana R, Lauzon, Robert J, Wang, Yanhong, Mazurkiewicz, Joseph E, Schools, Gary P, Davies, Kelvin J.A

“…The use of mitochondrial RNA as an indicator of apoptosis was investigated. Exposure of HA-1 fibroblastic cells to 10 μmol H 2O 2 per 10 7 cells induced…”
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A cyclical, developmentally‐regulated death phenomenon in a colonial urochordate by Lauzon, Robert J., Ishizuka, Katherine J., Weissman, Irving L.

“…Botryllus schlosseri is a colonial ascidian whose asexually derived, clonally modular systems of zooids exhibit developmental synchrony. The blastogenic cycle…”
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Evidence for transcriptional modulation but not acid phosphatase expression during programmed cell death in the colonial tunicate Botryllus schlosseri by Lauzon, Robert J., Chang, Wen-Teh, Dewing, Lesley S.

“…Botryllus schlosseri is a clonally modular ascidian in which asexually derived adults (zooids) exhibit developmental synchrony. At the conclusion of the…”
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The role of T cell receptors in non-MHC-restricted cytotoxicity by Lauzon, R J, Siminovitch, K A, Roder, J C

“…The relationship between natural killer cells (NK) and cells of the T lineage has been obscured by the existence of poorly characterized clones of presumed NK…”
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Segregation of the NK-sensitive phenotype in human x mouse somatic cell hybrids reveals separate genetic control of recognition and postrecognition determinants by Lauzon, R J, Roder, J C

“…In an attempt to investigate the nature of tumor cell-derived membrane surface determinants involved in natural killer cell (NK) recognition or postrecognition…”
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Cyclical Generation and Degeneration of Organs in a Colonial Urochordate Involves Crosstalk between Old and New: A Model for Development and Regeneration by Lauzon, Robert J, Ishizuka, Katherine J, Weissman, Irving L

“…Botryllus schlosseri is a colonial marine urochordate in which all adult organisms (called zooids) in a colony die synchronously by apoptosis (programmed cell…”
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T cell receptor gene rearrangements in cells with natural killer activity in the mouse by Lauzon, R J, Siminovitch, K A, Roder, J C

“…Cell-mediated recognition can operate at different levels of complexity and specificity based largely on the time of appearance of effector mechanisms during…”
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Hexactinellid sponge ecology: growth rates and seasonality in deep water sponges by Leys, Sally P, Lauzon, Nelson R.J

“…It has been well established that sponges play an important role in benthic ecology as abundant, large, sessile filter-feeders. However, the ecology of one…”
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Identification of a novel gene involved in asexual organogenesis in the budding ascidian Botryllus schlosseri by Laird, Diana J., Chang, Wen‐Teh, Weissman, Irving L., Lauzon, Robert J.

“…Development via regeneration or budding shares some known genetic pathways with embryogenesis, but no concerted effort has been made to identify genes unique…”
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Applying the foot-in-the-door approach to increase response rates to mailed questionnaires and to enhance donation behaviour by Lauzon, Richard R. J

“…This study evaluated the ability of a promised charitable donation to the Heart and Stroke Foundation by a corporate sponsor, Bell Canada, to stimulate a…”
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An Epidemiological Approach to Health Promotion by LAUZON, RICHARD R. J.

“…A health promotion model based upon the epidemiological components of host, agent, and environment is described. The host is perceived in terms of the…”
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