This data dump was provided by Xenbase.  The script was written by Chris Jarabek (cjjarabe@ucalgary.ca) on October 25, 2010.  
The content of the dump includes all of the highest quality images from Xenbase that are taken from either large scale screens
or community submissions that have at least one manually (eg. human) curated gene expression pattern associated with that image.

The images are named with their Xenbase accessions.  You can go to Xenbase http://www.xenbase.org and select “Xenbase Accession” 
from the minibar at the top of the screen and enter the file name (minus the file extension).  This will show you the image as 
it appears in Xenbase.

The expression information is saved in metadata.xml.  The data is organized by image.  Each image has “accession” attribute 
which contains the file name for the image to which this block of data pertains.  Each image has one or more expressionPattern 
blocks (some images may have more than one expression pattern curated).  

Each expressionPattern contains the following blocks:
1)	feature: this is the gene or the cDNA that is showing expression in the image.  geneId and cdnaId contain internal 
	Xenbase IDs.  It is possible that both cdnaId and cdnaName will be null.
	
2)	species: this is the organism that is shown in the image.  This will either be X.laevis, X.tropicalis, or Xenopus 
	(if the specific subspecies is not known).
	
3)	expressionStages: this is the actual stage / tissue expression information.  This block contains a startStage block, 
	an endStage block, and a tissues block, which contains the individual tissues showing expression.  The xaoAccession 
	field contains the accession for the given tissue in the Xenopus anatomy ontology (which is available on Xenbase).


If you have any questions about the data please feel free to e-mail either me (Chris), or Xenbase (xenbase@ucalgary.ca)
