Figure 4

Boutique microarray log plots. Five mouse apoptosis boutique microarrays used in the mouse cell line experiments. Upper left to lower right: Log_e median gene intensity vs. log_e rank – a. Normalized according to Zipf's law, using internal positive and negative controls as proxies for the whole data set. b. Normalized with a loess curve fit using a selected set of housekeeping genes as proxies (see Methods). c. Normalized according to Zipf's law, using the same selected set of housekeeping genes as in b. as proxies d. The raw data. e. For comparison purposes only, normalized using the quantile method. f. For comparison purposes only, normalized using the standard loess method.