Multi-centre studies that span several regions or districts, or are national in coverage, may require separate applications to the individual committees that serve each location.
The important point is that different "resolution" information can be used, this is particularly important if a tumour spans several regions, as will be discussed later.
This reformulation is fully consistent with the spirit of the standard DID analysis and can be used in the regressions spanning several years and regions (see, e.g., Carpenter (2004) and Wooldridge (2010)).
As shown in Figure 6C, our results demonstrate that Wfs1 pyramidal cells receive afferent information from pyramidal cells spanning several layers and regions of the cerebral cortex and that projection neurons in the posterior thalamic nuclear group (Po) and the lateral amygdala synapse onto Wfs1-expressing cells in the mPFC.
Recent advances in genome enrichment technologies provide efficient methods of region-specific, in-solution partitioning of regions spanning several megabases [ 4, 5].
Transposons are also non-randomly arrayed within larger chromosomal regions that may share fairly similar recombination levels as it has been shown that large transposon-free regions (TFR) spanning several kb often surround important regulatory gene regions in the genome such as early development regulating genes [ 31, 32].
In humans, CNVs that often include large regions spanning several genes, are an important aspect of genetic variation, and have been associated with various diseases [ 11, 12].
If threshold response is regulated across regions spanning several wing cells (or across an entire wing surface [ 71]), variation in the color composition of two eyespots (Fig. 1a) might result from random perturbations during the development of individual wing compartments, not from independent heritable variation in response properties.
A multitude of MHC class II genes occupy a genomic region spanning several hundred kilobases in length [4] [10], making it very difficult for researchers to resolve all of the MHC genes in a given species using polymerase chain reaction (PCR -based techniques.
