[BioC] limma question

[ivan.borozan at utoronto.ca]

hi there,

I would like to estimate the effect on gene expression levels of two factors Age
and activity (each with 4 levels) using Limma.

for my design matrix i have

dataB<-data.frame(samples = arrays,Age=factor(FFAge),activity = factor(FFfibrosis))

design<-model.matrix(~activity*Age, data=dataB)

(samples contain the names of my arrays)

fit <- lm.series(MANormBetween$M,design)

toptable(coef=2,num=10,genelist=gal,fit=fit,adjust="fdr",sort.by="P")

I would like to know to which effect the quoted P.values in toptable()
correspond to ? 
Also i would like to know how to extract the P.value for the activity:Age effect.

all the best.