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...trophy, but not yet THF.Experiments were conducted in age-matched 4 week-old male untreated dTGR.Untreated dTGR were divided in two subgroups, rats with cardiac hypertrophy (n=18) and rats with THF (n=8).Rats were killed at age 7 weeks.Total RNAs (five animals per group) were isolated from the left ventricle.For all rgu34_a affymetrix chips were used. Iam using maanova package. In using fitmaanova function, we have to set variables to formula and random.Plz, suggest me what to take in formula and random. *fit.fix <- fitmaanova(rat, formula = ~Array+sample, random = ~Array)* Error in fitmaanova(ra...