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Synaptic plasticity (e.g., long-term potentiation [LTP]) is considered the cellular correlate of learning. Recent optogenetic studies on memory engram formation assign a critical role in learning to suprathreshold activation of neurons and their integration into active engrams (“engram cells”). Here we review evidence that ensemble integration may result from LTP but also from cell-autonomous changes...
The metabotropic glutamate receptor, mGluR1α, is postsynaptic in excitatory synapses in many populations of neurons and mediates long-term responses. The present study defines the distribution of this receptor using a new, highly specific monoclonal antibody to mGluR1α. Overall distribution of immunostaining was similar to that described previously with polyclonal antibodies, including prominent staining...
The genomic locus containing the murine calbindin-D 28K gene has been isolated and partially characterized. Genomic cloning revealed an exon/intron chromosomal structure very similar to the avian gene previously described. The ability of thecalbindin-D 28K upstream region to direct cell-specific expression was tested in vivo. Varying lengths of upstream sequence...
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