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Comparison of [3H]oestradiol (E2)-binding capacities of a series of human breast cancer cytosols simultaneously measured by DCC and hydroxylapatite (HAP) assays (ethanolic extraction). The ordinate corresponds to values established by DCC, and the abscissa to those by hydroxylapatite (data established by Scatchard plot analysis). A significant correlation was obtained between the two assays in 97 out of 102 (95%) samples; five outlayers are represented by closed symbols in the insert.
