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The expression and distribution of androgen, estrogen and progesterone receptors was examined by immunohistochemical staining in 31 paraffin-embedded sections from ovarian tumors and the results were assessed by semiquantitative image analysis. Immunohistochemical staining showed heterogeneous patterns of steroid receptor distribution, with mainly nuclear(More)
HYPOTHESIS The differing clinical behavior of acoustic neuroma (AN) may be explained by the presence of specific biological features involved in tumorigenesis and growth. BACKGROUND Transforming growth factor (TGF) beta1 is known to participate in the regulation of peripheral nerve tumors, modulating cell proliferation and differentiation with mechanisms(More)