Multiple measurements per patient:
Several spots per tumor sample and several “scores” per spot
Each patients (tumor sample) is usually represented by multiple spots
•  3 tumor spots
•  1 matched normal spot
•   Maximum intensity = Max
•   Percent of cells staining = Pos
•   Percent of cells staining with the  
    maximum intensity = PosMax
•   Spots have a spot grade: NL,1,2,..
•   Indicator of missingness