Similarities in Gene Expression Profiles during In Vitro Aging of Primary Human Embryonic Lung and Foreskin Fibroblasts

Table 2

Number of genes whose expression values are monotonically up- and downregulated, respectively, for MRC-5 and HFF cells. Note that monotonic behaviour does not necessarily include differential expression. See Supplemental Table for complete test results.

Class	MRC-5	HFF
Monotonically upregulated	47	423
Monotonically downregulated	132	465
Nonuniformly (not significant)	19,058	18,349