Hähnel R, Avenell M H, Hähnel E
Department of Obstetrics & Gynaecology, University of Western Australia, King Edward Memorial Hospital for Women, Subiaco.
Clin Chem. 1989 Nov;35(11):2226-7.
Estrogen receptor (ER) and progesterone receptor (PR) assays were performed by solid-phase enzyme immunoassays (Abbott) on low-speed (2600 x g) and high-speed (100,000 x g) supernates of breast-cancer homogenates. The results were similar, indicating that ultracentrifugation is not essential for ER and PR assays with the Abbott kit.