The first column matches Feature IDs from the genome. This column could have also been a gene alias. Some of the gene aliases supported by KBase include NCBI, EMBL, UniProt, BioCyc, and ASAP. The column headings are sample conditions. The remaining cells in the table contain expression values for the appropriate gene and sample. Be sure to exclude gene features that are missing all expressions or are composed of non-changing expressions across the samples.