[Hormone receptors in breast cancer. Thoughts on the use of their determination as a test of hormone dependence in a hospital routine (author's transl)].

The determination of hormone receptors in tumour tissues including, among others, breast tumours is becoming routine examination in a greatly increasing number of clinical departments. We draw the attention of clinicians to the criteria of the quality necessary in such quantitative measurements and the limits of such an examination if it is to prove useful in directing the therapy of those clinics that use it in the light of the experience we have gained in the last 4 years.