Refrigerating the Beckman "airfuge" for improved steroid receptor assays.
D001943:Breast Neoplasms / Q000378:metabolism; D003080:Cold Temperature; D003600:Cytosol / Q000032:analysis; D005260:Female; D006801:Humans; D011960:Receptors, Estrogen / Q000032:analysis; D011980:Receptors, Progesterone / Q000032:analysis; D011987:Receptors, Steroid / Q000032:analysis*; D014461:Ultracentrifugation / Q000295:instrumentation / Q000379:methods
D011960:Receptors, Estrogen; D011980:Receptors, Progesterone; D011987:Receptors, Steroid