Titlebook: Invertebrate Historecognition; Richard K. Grosberg,Dennis Hedgecock,Keith Nelson Book 1988 Plenum Press, New York 1988 behavior.evolution.

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Sulfated Polysaccharide-Mediated Sponge Cell Aggregation: The Clue to Invertebrate Self/Nonself-Reche first metazoans. The success of multicellularity demanded an ability to recognize self from nonself. It has been argued that this is achieved by a specific recognition of self (Coombe .. 1984a). This article examines a simple invertebrate cell adhesion system, sponge cell reaggregation, for clues

Estimable

Historecognition and Immunocompetence in Selected Marine Invertebrates,ge of coming into contact with allogeneic and xenogeneic tissues. All invertebrate phyla examined demonstrate some degree of specific nonself reactions. Some sponges, scleractinian corals, gorgonians, echinoderms, and tunicates have demonstrated the existence of an alloimmune system by fulfilling th

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Evolution of MHC Genes and Functions: The Disease Connection,re the transplantation antigens that elicit allograft rejection, and MHC-linked genes also appear to allow kin recognition by chemosensory mechanisms in mammals. In the protochordate ., a genetic system with dual cell:cell and whole-animal recognition functions controls both intercolony histocompati

泥沼

Retreat Growth in the Ascidian ,: A Consequence of Nonself Recognition,ssed alleles. Colonies which do not share an allele at this locus reject each other. The outcomes of juxtaposing nonfusible colonies of the colonial ascidian . from Monterey, California, were followed in terms of colony rejection and colony vectorial growth in two sets of experiments. In the first,

Lipoprotein(A)

Historecognition and Fine-Scale Spatial Genetic Structure in Sessile Benthic Invertebrates,tion of reproducers), through dispersal (e.g., mixing, larval behavior), settlement (e.g., larval behavior, habitat distribution), and post-settlement interactions with the physical and biotic environments, until death (e.g., aggression, movement, stress, habitat distribution). Post-settlement intra

商業(yè)上

Recognition of Self or Nonself? Theoretical Implications and an Empirical Test,self, or by detecting the presence or absence of nonself attributes. In the vertebrate immune system detection of nonself antigens appears to be the primary mechanism by which self and nonself are distinguished. The mechanisms that distinguish self from nonself in invertebrate historecognition syste

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Emasculate

GOAT

Retrospective,ttention primarily for what they may tell us of the evolutionary origins of mammalian immune systems. Yet, the origins of invertebrate self/nonself-recognition mechanisms and their relationships, analogous or homologous, to vertebrate immune systems are obscure. The Bodega Marine Laboratory devoted

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Gysèle Van de Vyvervelopment. Farmer-herder conflicts have resulted in attacks and reprisals. While the farmers are striving to safeguard their lands as violence intensifies, the herders are turning to violent tactics to defend their animals while grazing. The paper is qualitative relying on secondary sources of data.