Fig. 6. Stromal cultures affect spheroid size. Epithelial sample J was mixed into Matrigel and grown for 1 week in either KSFM plus 2% serum (K2) or K2 plus primary stroma (S), 20-7 M dihydrotestosterone (D), and 10 ng/ml estrogen (O) or K2 plus STO cells, D and O. Spheroid size was measured using a graticule. Bars, SD.