ESTROGEN AND PROGESTERONE RECEPTORS IN NORMAL HUMAN ENDOMETRIUM - COMPARISON OF IMMUNOCYTOCHEMICAL ANALYSIS ON FROZEN AND PARAFFIN SECTIONSWITH OR WITHOUT ENZYMATIC PRETREATMENT

Immunocytochemical study in paraffin sections of human endometrium sho wed that the receptor contents for both oestrogen and progesterone rec eptors were lower than in the frozen sections although the staining pa tterns were similar in these two section types. Pretreating the specim ens with proteolytic enzymes like trypsin, DNase and pronase improved the oestrogen receptor staining but a better result with progesterone receptor staining was obtained when no enzymatic pretreatment was appl ied to the sections.