Results 171 to 180 of about 25,915 (289)

From silence to song: Testosterone triggers extensive transcriptional changes in the female canary HVC

open access: yesJournal of Neuroendocrinology, Volume 37, Issue 6, June 2025.
Abstract Seasonal song production in canaries is influenced by gonadal hormones, but the molecular mechanisms underlying testosterone‐induced song development in adult female canaries, which rarely sing naturally, remain poorly understood. We explored testosterone‐induced song development in adult female canaries by comparing gene regulatory networks ...
Meng‐Ching Ko   +5 more
wiley   +1 more source

Evidence of Holarctic distribution: common frog Rana temporaria eggs in Fennoscandia host photosymbiotic green algae (Oophila sp.)

open access: yesOikos, Volume 2025, Issue 6, June 2025.
Symbiosis is a commonly occurring phenomenon, with most plants and animals being holobionts, comprising of a host and its corresponding symbionts. It is, however, less common to have a symbiont only under a specific life stage and even more so between a photosynthesizing organism and a vertebrate animal.
Pontus F. Eriksson   +4 more
wiley   +1 more source

Contribution to the knowledge of the family Otoplanidae Hallez, 1892 (Rhabditophora, Proseriata) in the Mediterranean [PDF]

open access: yes, 2009
A growing awareness is rising that present perception of marine biodiversity is inadequate, and based upon unrepresentative data. The inadequacy of knowledge on taxonomy and distribution of marine organisms is particularly acute for interstitial ...
Delogu, Valentina
core  

The Effects of LeukemiaInhibitory Factor onDevelopment of MousePreimplantation Embryo

open access: yesArmaghane Danesh Bimonthly Journal, 2008
Introduction and Objective: Recent studies have demonstrated that mammalian preimplantation embryos are exposed to a mixture of many different growth factors and cytokines, expressed by the follicles, oviducts and endometrium.
I Amiri, M Parvini, A Amini, R Mahmodi
doaj  

Development of the internal reproductive organs in early nymphal stages of Archegozetes longisetosus Aoki (Acari, Oribatida, Trhypochthoniidae) as obtained by synchrotron X-ray microtomography (SR-μCT) and transmission electron microscopy (TEM)

open access: yesSoil Organisms, 2012
We studied the development of the internal reproductive organs in juvenile stages of Archegozetes longisetosus. 3D-renderings of organs were obtained from synchrotron X-ray microtomography (SR- µCT).
Paavo Bergmann, Michael Heethoff
doaj  

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