Table 1

Numbers of genes that differed in their expression between groups by microarray analysis

We fit one-way ANOVA models with separate means for each of the four groups of samples. We performed six F tests testing each of the hypotheses that the means of the trimmed average intensities in two of the four groups were identical. Listed are the numbers of genes that differed in their mean intensity values between groups by at least 1.5-fold (P < 0.01).
Gr.a IV vs. Gr. IGr. IV vs. Gr. IIGr. II vs. Gr. IGr. IV vs. N.B.Gr. II vs. N.B.Gr. I vs. N.B.
  • a Gr., grade; N.B., normal brain.