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The localization of 3β-hydroxysteroid dehydrogenase/Δ5-Δ4 isomerase (3β-HSD) conversion of DHEA into androstenedione in the porcine endometrium and myometrium collected during days 10 to 11, 12 to 13 and 15 to 16 of pregnancy and the estrous cycle. Exemplary areas of enzyme activity are marked with arrows. GE – glandular epithelium, VE – vascular epithelium, ST – stromal cells, LE – luminal epithelium, M – myometrium, NC – negative control.
