A technique for the instillation of solutions into the rat uterine lumen is described. The method has been tested by following the receptor depletion/replenishment cycle after oestradiol injection and by checking on the stoichiometry of hormone/receptor translocation from the cytoplasmic compartment into the nucleus. Both crude sediments from frozen uteri and nuclei purified by a novel procedure were analyzed and gave identical results. The limitations and the advantages of the technique are discussed.
Animals Cell Nucleus