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A topographic gradient of molecules in retina can be used to identify neuron position

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TLDR
A monoclonal antibody was obtained that binds to cell membrane molecules distributed in a topographic gradient in avian retina that can be used as a marker of cell position along the ventroanterior-dorsoposterior axis of the retina.
Abstract
A monoclonal antibody was obtained that binds to cell membrane molecules distributed in a topographic gradient in avian retina. Thirty-five-fold more antigen was detected in dorsoposterior retina that in ventroanterior retina. Most of the antigen was associated with the synaptic layers of the retina. Less antigen was detected in cerebrum, thalamus, cerebellum, and optic tectum, but little or none was found in non-neural tissues tested. The antigen was found on most or all cell types in retina, and the concentration of antigen found is a function of the square of the circumferential distance from the ventroanterior pole of the gradient toward the dorsoposterior pole. Thus, the antigen can be used as a marker of cell position along the ventroanterior-dorsoposterior axis of the retina.

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Developmental mechanisms that generate precise patterns of neuronal connectivity

TL;DR: The range of activityindependent and activity-dependent mechanisms that generate precision of neuronal connections is considered-the connections between motoneurons and muscles and between the retina and higher visual centers--to highlight the extent to which different parts of the nervous system use the same mechanisms but in different proportions to achieve the final specificity.
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The ephrins and eph receptors in neural development

TL;DR: The ephrins and Eph receptors are implicated as positional labels that may guide the development of neural topographic maps, and may make a major contribution to the accurate spatial patterning of connections and cell position in the nervous system.
Journal ArticleDOI

Contact and adhesive specificities in the associations, migrations, and targeting of cells and axons

TL;DR: Current ideas concerning the roles of cell adhesion molecules and cell interactions are discussed, both in development and in several physiological and pathological processes, attempting to highlight the general features and commonalities and presenting working hypotheses.
Journal ArticleDOI

A tissue-specific endothelial cell molecule involved in lymphocyte homing

TL;DR: An endothelial cell surface molecule that is selectively expressed in mucosal organs is required for lymphocyte homing to mucosal lymphoid tissues and appears to function as a tissue-specific marker or address signal for recognition by lymphocytes circulating in the blood.
Journal ArticleDOI

Axon guidance and the patterning of neuronal projections in vertebrates

TL;DR: Over the past decade, new insights have been obtained into the cellular strategies and molecular mechanisms that guide axons to their targets in the developing vertebrate nervous system.
References
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Journal ArticleDOI

Antibodies to major histocompatibility antigens produced by hybrid cell lines.

TL;DR: FUSION between myeloma cells and spleen cells from immunised donors has been shown to be a successful method of deriving homogeneous anti-SRBC (anti-sheep red blood cell) and anti-TNP antibodies.
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