It is known that progesterone receptor (PR) isoform A (PR‐A) and isoform B (PR‐B) may
mediate different effects of progesterone. The objective of this study was to determine if the …

The human progesterone receptor (PR) is a ligand-activated nuclear transcription factor that
mediates progesterone action in target tissues. Two PR proteins, PR-A (M r 81,000–83,000) …

Progesterone action in target tissues is mediated through two progesterone receptor (PR)
isoforms, PR-A and PR-B, which display different regulatory functions in target cells. Relative …

The PR-A and PR-B isoforms of progesterone receptors (PR) have different physiological
functions, and their ratio varies widely in breast cancers. To determine whether the two PR …

All known progesterone target cells coexpress two functionally different progesterone
receptor (PR) isoforms: 120-kDa B-receptors (PR-B) and N-terminally truncated, 94-kDa A …

Progesterone receptors (PRs) are prognostic markers in breast cancers irrespective of the
patient's progestational status. However, there are two PR isoforms, PR-A and PR-B, that are …

The human progesterone receptor (PR) is a ligand-activated nuclear transcription factor
which mediates progesterone action in target tissues. Two PR proteins, PR A (81–83 kDa) …

Human progesterone receptor (PR) expression is controlled by two promoter regions giving
rise to transcripts encoding PR A and B proteins. It is unknown whether estrogen and …

The progesterone receptor (PR) mediates the actions of progesterone in the normal and
malignant breast. PR is expressed as two proteins, PR B and PR A, which are expressed in …

Progesterone, through its nuclear receptors (PR), regulates the development and growth of
breast cancers. PR also serve as markers of hormone dependence and prognosis in …