Comparison of the distributions of raw data and filtered sub sets of probe-level data.

Expression data in log2 from condition 3, replicate A, chip 1. Raw output (ALL) was filtered using SGH data to produce subsets of data containing subclusters (and associated probes) present in CZ4126/02 (CZ specific) and subclusters not present in CZ4126/02 (Not CZ). Normalization was performed after filtering. Negative: probes synthesized from Streptococcus pneumoniae genes expected to be absent in H. influenzae. N: number of probes in each set. Probes are synthesized in duplicate on each chip (probe-set 1, probe-set 2).Comparison of the distributions of raw data and filtered sub sets of probe-level data.