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14/10/2019
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medical and biological databases Sondage réalisé avec Drag'n Survey. Créez gratuitement votre sondage professionnel avec Drag'n Survey.
25/09/2019
https://www.youtube.com/watch?v=Eros1GflFeE&feature=youtu.be
cicada-la plateforme de bases de données multidisciplinaires -- Cicada Organisation -- To join our community Facebook : https://www.facebook.com/groups/441731416430614/ Whatsapp : https://chat.whatsapp.com/K29jQcTWdVM1...
08/03/2019
High level connectivity using mapping technology white matter fiber
08/03/2019
Thalamo-cortico connectivity with MRI using tracking lines
18/02/2019
And another batch of trans-[Co(en)2Cl2]Cl, this time using a different method that yields a purer product
17/02/2019
Neurography of cervical spine and nerve roots with 1.5 tesla
14/02/2019
High resolution MRI of MSK 3D MERGE/MEDIC with and without water excite fat sat
12/02/2019
Cortical circuits consist of precise cell-type specific connections, whereby subcortical brain structures form connections with specific cortical inhibitory neuron subtypes
NRSE and a minimal CMV promoter showed markedly restricted expression to a small subset of mostly inhibitory neurons, but whose commonalities are unknown.
10/02/2019
Fertility in mammals is controlled by hypothalamic neurons that secrete gonadotropin-releasing hormone (GnRH). These neurons differentiate in the olfactory placodes during embryogenesis and migrate from the nose to the hypothalamus before birth. Information regarding this process in humans is sparse. Here, we adapted new tissue-clearing and whole-mount immunohistochemical techniques to entire human embryos/fetuses to meticulously study this system during the first trimester of gestation in the largest series of human fetuses examined to date. Combining these cutting-edge techniques with conventional immunohistochemistry, we provide the first chronological and quantitative analysis of GnRH neuron origins, differentiation and migration, as well as a 3D atlas of their distribution in the fetal brain. We reveal not only that the number of GnRH-immunoreactive neurons in humans is significantly higher than previously thought, but that GnRH cells migrate into several extrahypothalamic brain regions in addition to the hypothalamus. Their presence in these areas raises the possibility that GnRH has non-reproductive roles, creating new avenues for research on GnRH functions in cognitive, behavioral and physiological processes.
10/02/2019
Whole mouse-brain vasculature tomography. (a) 3D rendering (Amira 5.3 software, Visage Imaging) of the whole mouse-brain vasculature acquired using LSFM and gel-BSA-FITC vascular staining. The image was produced from downsampled stacks stitched using the TeraStitcher software 42. (b) Single frame from a stack at original resolution (pixel size 0.65 ?m) showing details at the capillary level in a very internal optical section of the brain.
10/02/2019
Whole mouse brain neuronal and vascular imaging. (left) (a) Whole-brain 3D rendering of GFPexpressing neurons acquired with LSFM. (b) 3D rendering of the same brain showing blood vessels labeled with gel-BSA-FITC acquired with LSFM. Downsampled stacks from LSFM acquisitions were stitched using TeraStitcher software42. (c) Composite image. (right) 100 um MIPs from original acquisitions (z-step 2 um, xy pixel size 0.65 ?m). (a) GFP-expressing neurons; (b) gel-BSA-FITC labelled vasculature; (c) composite.