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There is an accumulation of evidence implicating a role for vitamin D 3 in the developing brain. The receptor for this seco-steroid is expressed in both neurons and glial cells, it induces nerve growth factor (NGF) and it is a potent inhibitor of mitosis and promoter of differentiation in numerous cells. We have therefore assessed the direct effect of vitamin D 3 on mitosis, neurite...
A polarized morphology, defined by extension of an anterior pseudopod, is essential for the amoeboid migration of embryonic mesenchymal cells. Leukocytes adopt a similar morphology immediately following suspension in simple buffers containing chemotactic factors. Polarization in suspension therefore provides a rapid and sensitive screening assay for putative regulators of leukocyte migration. The...
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