mall:
  618 x 8932, all the mouse expression data:
            Mm.10 Mm.100065 Mm.100068 Mm.100112 Mm.100113
AdFA1a -0.4741022 0.5094528 0.6022077 0.6100239 0.7986013
AdFA1b -0.4522448 0.4376525 0.6526657 0.7263203 0.6618664
AdFA1c -0.4181302 0.3834297 0.5491281 0.7960797 0.9017942
AdFA1d -0.2777619 0.6600504 0.4797468 0.7495983 0.8794964
AdFA1e -0.4534114 0.5741751 0.6576353 0.6470228 0.8588287

mouse names at left, probe names at top

mouse names:
tissue+sex+feeding+age+id
tissue: Ad  B Bm  C  E  G  H Hi  K  L Lu Ms  S Sp St  T
sex: F M
A: stands for ad libitum (all these mice were fed ad libitum)
age: 1 2 3 4  (groups 1,6,18,24 months)
id: a b c d e  (five m/f at each age)

Mous:
  618 mouse IDs

Sex:
  618 x 1
  1 for female

Tmat:
  618 x 16
  matrix of tissue indicators

Mmat:
  618 x 40
  matrix of mouse indicators

Age:
  618 x 1
  ages of mice