#tailbud
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merlinlange.bsky.social
#FluorescenceFriday time - #Zebrafish embryonic development in action!

🧪🔬 #Microscopy with a light-sheet - view of the embryo's rostral (brain) and caudal (tailbud) ends.
November 29, 2024 at 4:27 PM
mrsirban.bsky.social
[Anal] Tailbud, le rosebud queue de cheval amantelilli.com/plug-queue-c...
Hennir de plaisir avec le rosebud tailbud | AmanteLilli
Le plug anal queue de cheval, un rosebud tailbud d'un érotisme fou et d'une sensualité presque animale ! Pour hennir de plaisir en mode "ponygirl".
amantelilli.com
August 24, 2025 at 7:42 PM
aliseleit.bsky.social
(11/15)
In every vertebrate studied to date, neuromesodermal progenitors (NMPs) — the bipotent stem cells that sustain axis segmentation — exist as a single tailbud pool.

In eels, we discover TWO spatially distinct NMP pools.

Microsurgical amputations show eels segment even without a tailbud !
May 5, 2026 at 11:41 AM
haloren.bsky.social
Dech's tail usually entices smaller creatures like rats and birds with its pheromones. Certain individuals prove surprisingly susceptible to it, though, like Sehiny here! But hey, surely there's no worries for a draco-lich in a creature that eats magic, too, right?
Art by Arkail, featuring Sehiny!
Dechroma lounging atop a belly several times his size, with Sehiny's tail hanging out of his own tailbud/maw
April 28, 2026 at 5:00 PM
drbjcarr.bsky.social
Happy #FluorescenceFriday Here's a collage of some of my favorite images from my postdoc. See alt for descriptions. 🧪 🐸 #retina
A collage of different microscopy images. From top left across: tadpole tailbud, olfactory neurons, lucifer yellow labeled cones, a color depth map of peripherin labeling of rod outer segments, red mutant cone outer segments, multiciliated skin cells, prom1 labeling in outer segments, and actin labeling in a tadpole tail.
February 20, 2026 at 7:05 PM
mrsirban.bsky.social
[Anal] Tailbud, le rosebud queue de cheval amantelilli.com/plug-queue-c...
Hennir de plaisir avec le rosebud tailbud | AmanteLilli
Le plug anal queue de cheval, un rosebud tailbud d'un érotisme fou et d'une sensualité presque animale ! Pour hennir de plaisir en mode "ponygirl".
amantelilli.com
February 12, 2026 at 8:46 PM
amantelilli.bsky.social
A #ButtPlugFriday on my free website ⤵️

🆓▶️ amantelilli.com/plug-queue-c...

Do you like #tailbud? It's #erotic 😄 This #horsebud is reminiscent of the animality in all of us 😜

Aimez-vous les #rosebud à queue ? C'est #érotique 😄 Ce #horsebud rappelle l'animalité en nous 😜

#sexy #adult #nsfw #hotwife
February 7, 2025 at 2:09 PM
amantelilli.bsky.social
Bon appétit les LoulouX 😄
Ayeeeeee 😃 C'est le week-end 🤩 Je vais rejoindre @MrSirban.bsky.social à la maison pour le déjeuner 😋 Il a encore le télétravail cet après-midi 😬La vidéo n'est pas du jour ☺️
BisouxXx grisaille 😘

🆓👉 amantelilli.com

#ButtPlugFriday #rosebud #tailbud
February 13, 2026 at 11:21 AM
mrsirban.bsky.social
[Anal] Tailbud, le rosebud queue de cheval amantelilli.com/plug-queue-c...
Hennir de plaisir avec le rosebud tailbud | AmanteLilli
Le plug anal queue de cheval, un rosebud tailbud d'un érotisme fou et d'une sensualité presque animale ! Pour hennir de plaisir en mode "ponygirl".
amantelilli.com
March 31, 2025 at 7:35 PM
haloren.bsky.social
Dech's tail usually entices smaller creatures like rats and birds with its pheromones. Certain individuals prove surprisingly susceptible to it, though, like Sehiny here! But hey, surely there's no worries for a draco-lich in a creature that eats magic, too, right?
Art by Arkail, featuring Sehiny!
Dechroma, lounging on a belly several times his size, with Sehiny's tail hanging out of his own tailbud/maw. This version shows Sehiny, aroused, inside said belly via x-ray
April 28, 2026 at 5:15 PM
campaslab.bsky.social
Merci Bertrand! We see it on the surface of the tailbud and PSM. It goes doen in the somites, likely because of inverse polarity…
October 29, 2025 at 11:10 AM
devbiol.bsky.social
#DBfeature #ICYMI 🐸

Identification, expression and function of 28 new candidate regulators of placodal neurogenesis in Xenopus laevis

By Bertrand Hutlet, Gerhard Schlosser

tinyurl.com/34szsky6
Expression patterns of eya1 and its candidate interaction partners at mid-tailbud stage. Xenopus laevis embryos after whole-mount in situ hybridization at stage 27, in lateral views (anterior is to the left). The schematic drawing (A) shows the distribution of placodes in a mid-tailbud stage embryo. Arrows indicate expression in placodes and display the colour code used in the drawing (yellow: profundal placode; dark green: trigeminal placode; light green: olfactory placode, pink: otic placode; brown: lateral line placode; orange: epibranchial placodes). For placodes derived from the posterior placodal area, only the otic placode and one lateral line placode are indicated in panels C–L. Arrowheads and asterisks indicate other areas of expression. Pink arrowhead: somites; white asterisks: pharyngeal pouches. Blue asterisks (neural crest streams) and arrowheads indicate expression in areas where eya1 is not expressed. Panels D, F, H, J, L are magnifications of panels C, E, G, I, K, respectively. Abbreviations: B, blood islands; E, prospective eye, including lens (L) placode; EB, epibranchial placodes; F: forebrain; H: hindbrain; LL, lateral line placodes; LPM, lateral plate mesoderm; M: midbrain; Ol, olfactory placode; Ot, otic placode; P, pronephros; Pr, profundal placode; V, trigeminal placode.
July 23, 2026 at 2:31 PM
buckleylab.bsky.social
www.frontiersin.org/journals/cel... New paper from our lab demonstrating that secondary neurulation likely arose in vertebrates to enable mesenchymal tailbud extension.
September 25, 2026 at 10:35 AM
weissmanlab.bsky.social
Second: Germ layer fate restriction begins before gastrulation and extends beyond it. Detectable germ layer bias in the epiblast first appears ~E4. By contrast, in the growing tailbud bipotent axial progenitors continue to specify additional mesoderm and ectoderm through E9.5
May 9, 2026 at 4:25 PM
darras-sebastien.bsky.social
Looking for a #post-doc?
#MSCA-PF 2026 program @sorbonne-universite.fr
The #DEEVA team of @biom-banyuls.bsky.social from @obs-banyuls.fr in #WindyBanyuls from @sorbonne-universite.fr and @cnrsoccitanieest.bsky.social proposes a research project on #ascidians to host a post-doctoral fellow.
Composite panel with 4 images: 1) a confocal image with nuclei (white) and gene expression (yellow and ref) of a tailbud stage Ciona intestinalis embryo, 2) a colony of Clavelina lepadiformis, 3) a larva of Molgula appendiculata and 4) the logo of the DEEVA team. Logo of the Marie Sklodowska-Curie Actions
March 5, 2026 at 5:02 PM
zerothehusky.bsky.social
Happy birthday tailbud! 🥳
September 4, 2026 at 6:45 AM
dev-journal.bsky.social
Temporal regulation of ascidian muscle-specific genes

Read this Research Highlight showcasing work from Izumi Oda and Yutaka Satou from Kyoto University:
https://journals.biologists.com/dev/article/152/2/e152_e0202/365394/
Figure 6: Snai-binding sites promote expression around the middle tailbud stage. (A-D) Expression of a reporter gene (GFP) was examined by in situ hybridization at the middle tailbud stage. Numbers indicate embryos with strong expression (expression area is over 50% of the area of muscle cells), embryos with weak expression (expression area is under 50% of the area of muscle cells), and embryos with no expression. (A-D) The regions 143-bp and 172-bp upstream of Meox (A) and Tcf15-r (B), which contain two Snai-binding sites, are sufficient to promote expression of the reporters in muscle cells, while mutations introduced to Snai-binding sites impair expression of the reporters (C,D).
January 20, 2025 at 4:29 PM
arula-ratnakar.bsky.social
But the process of the embryo turning (which we talked about last week) and the tailbud elongation allows more and more of the hox gene clusters to be in open chromatin and available to be transcribed. (10/n)
February 8, 2026 at 3:47 AM
weissmanlab.bsky.social
What did we find? We dissected fate restriction across the developing notochord, heart, neural crest, and tailbud. From these case studies, a few high-level principles about mammalian development emerged
May 9, 2026 at 4:25 PM
arula-ratnakar.bsky.social
The goal is to turn on Mesp in S-I and activate Notch in posterior S0. Tailbud elongation pulls FGF down, and so now we have NOT FGF AND Tbx6 satisfied in S-I! All that is needed is Notch! (18/n)
What happens next: Tailbud elongation has pulled down FGF, so there is a region now where in S-I we have Tbx6 and NOT FGF satisfied. All that's left is to find a way to express Notch!
February 8, 2026 at 5:51 AM
plosbiology.org
How do #PluripotentCells acquire lineage-specific identities during #GermLayer specification? This study shows that maternal TFs Foxi2 & Sox3 act as master regulators of ectodermal germ layer specification, ensuring robust & precise expression of target genes @plosbiology.org 🧪 plos.io/4nIUu2O
Top left: Phenotypic analysis of Foxi2, Sox3, and Foxi2/Sox3 morphants at the early tailbud stage. Top right: Single nucleus RNA-seq UMAP (uniform manifold approximation projection) identifying 14 distinct cell types in the early gastrula. Bottom: Schematic diagram depicting the regulatory roles of Foxi2 and Sox3, either independently or jointly, in activating the expression of target genes across various ectodermal cell types.
November 7, 2025 at 1:55 PM
bensteventon.bsky.social
journals.biologists.com/dev/article/...
Spinal cord elongation enables proportional regulation of the zebrafish posterior body
Highlighted Article: Targeted ablation of dorsal progenitors in the zebrafish tailbud shows how the rate of spinal cord elongation governs the corresponding elongation of the neighbouring paraxial mes...
journals.biologists.com
August 17, 2026 at 8:54 AM
arula-ratnakar.bsky.social
Posteriorly, there is a source of FGF that diffuses upward, but tailbud elongation pushes the source down over time. To get Mesp expression, you need Notch AND a protein called Tbx6 but NOT FGF. The segmentation of the somites involves creating this combination. (16/n)
February 8, 2026 at 5:46 AM
aliseleit.bsky.social
Hey Anahi...nice work !

Segments are normal sized, so is overall segment number and axis length (when tailbud is amputated).

I do think this is an eel-specific feature since the distribution of NMPs is quite unique and the pools are utilized differently over somitogensis.
May 25, 2026 at 11:48 AM