Must have same number of samples as the column types field. E.g. if the column types field is 'kidney,kidney,liver,liver', then there must be 4 sample columns in the counts file.

A comma separated list (no spaces) of the types of the data columns using the same name for replicates. E.g. kidney,kidney,kidney,liver,liver,liver

A comma separated tuple (no spaces) of the comparison you want to do. Must use the names from the Column Types list. E.g. comparing kidney to liver: kidney,liver. Comparing liver to kidney: liver,kidney