FIG 1.

Comparison of gene expression levels in sorted lytic and refractory cells by using microarray and proteomic approaches. (A) Venn diagram showing the overlap between the numbers of genes with at least 2-fold increased levels of gene products in lytic cells (top half) and those in refractory cells (bottom half). Numbers outside circles indicate the total number of genes with increased levels of mRNA (by microarray analysis [left]) or protein (by proteomic analysis [right]). Numbers inside small circles indicate the number of genes whose products were observed in lytic or refractory cells only.