From: Marmal-aid - a database for Infinium HumanMethylation450
ID used to identify sample. If from GEO this is the GEO accession number
A long descriptive name of the sample
The GSE number which can be used to a certain whether samples are from the same experiment.
The lineage of the tissue
Main tissue type E g. Blood, Brain, Liver, Kidney
Further sub categorisation of the tissue E g. for Blood this may be CD19, CD4 etc
If a transformed cell line the name of the line is given in this column
Indication of the disease state of the sample. NA here means no information was recorded and is most likely healthy.
A further charaterisation of the disease state E g. if the DISEASE column contains Cancer then this column will indicate what type
The sex of the sample if given as taken from the annotation file
The prediction of the sex of the sample using autosomal probes
The age of the sample if given.
Any additional information that could not be described in the other columns.