English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The distribution and intensity of delta 5-3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) activity was examined histochemically in ovaries from Mongolian gerbils during pregnancy and undergoing lactational delay. In all of the ovaries examined the corpora lutea showed the strongest level of activity, but like the interstitium and granulosa, there was no relationship between the enzyme pattern and embryonic development. Thecal 3 beta-HSD activity was only observed immediately before, and after implantation on day 8 p.c. in pregnancies without lactation, and was totally absent throughout lactational delay, appearing for the first time after day 15 in association with implantation. The absence of this key enzyme in the theca interna throughout the pre-implantation period means that the biosynthesis of androstenedione and progesterone cannot occur, thereby precluding the production of oestrogen, an essential steroid for implantation in this species.

reproduction nutrition development/annales de biologie animale, biochimie, biophysique/reproduction nutrition développement

Relationship between ovarian Δ<sup>5</sup>-3β-hydroxysteroid dehydrogenase activity and implantation in non-lactating and lactating Mongolian gerbils (Meriones unguiculatus)

Relationship between ovarian Δ5-3β-hydroxysteroid dehydrogenase activity and implantation in non-lactating and lactating Mongolian gerbils (Meriones unguiculatus)

Relationship between ovarian Δ⁵-3β-hydroxysteroid dehydrogenase activity and implantation in non-lactating and lactating Mongolian gerbils (Meriones unguiculatus)