Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal) header
Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal) profile picture

Tucumana Científica Médica Mamá Raulito MCAA Humboldt @womenbiomaging Presidenta OWSD-UNESCO Argentina Pres. FUNDRAA Dir. @cime_conicet #ImagingMicrobes

Tucumán, Argentina
Joined October 2010
Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)Photo by Virginia H. Albarracin (#LaAlbarracineta #ATeam) (@virkinal)
Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Mi provincia es así de linda #Tucuman ♥️
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Mass photometry uses light to weigh individual molecules. I think it’s really compelling and useful. If you wanted to weigh a protein, for example, you shine light at it, and electrons in the protein respond by scattering some of that light. The amplitude of the scattered light wave is approximately proportional to molecular mass, meaning that larger proteins produce a "stronger" signal than smaller proteins. Special microscopes can detect these tiny, tiny signals by combining light scattered by a protein with light reflected from the glass slide beneath it. The two light waves interfere, producing a small change in brightness. Researchers calibrate those measurements using proteins with known masses. Now, usually, mass photometry weighs a molecule as it falls on top of glass. But for this paper, they describe a method to keep weighing the same molecule and watch its mass change as other molecules attach and detach, in real-time. Basically, they attached individual proteins to small patches of a lipid membrane, so each protein could move a little bit, but couldn’t drift out of view. They then measured the mass of that protein 497 times PER SECOND over the span of an entire hour. Every time the protein binds to anything (like an antibody, or its receptor, or a small molecule), the binding event shows up as a little spike in the data. So with the SARS-CoV-2 spike protein, for example, they could follow its mass rising and falling as the ACE2 receptor attached and detached. They measured how long the two stayed bound together, also: 64 seconds on average. They also watched antibodies attach one after another, producing up to three distinct increases in mass, matching the spike’s three binding sites. Really beautiful biophysics.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Mira la hermosa vuelta que encontró la AFA para meter la bandera de Malvinas en el homenaje a Maradona. Genios de mierda 🗣️
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Hoy se publicó un artículo sobre invertebrados de salares con resultados muy interesantes, entre ellos, el primer registro de especímenes de tardígrados (ositos de agua) en distintos salares 🙌 Salazar et al. @udeantofagasta onlinelibrary.wiley.com/doi/…
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
JUSTICIA POR NANCY GODOY
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Me duele profundamente el crimen de Nancy Estela Godoy, docente. Quiero expresar mi solidaridad y acompañar a su familia, a sus seres queridos y a toda la comunidad educativa en este momento de tanto dolor.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
This metaphor of when you try to help someone who doesn’t want to change.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
CIENTÍFICAS TUCUMANAS EN EL EXILIO: UN ENCUENTRO CON RITA RAISMAN-VOZARI EN EL MARCO DEL PROYECTO PIUNT G749. Leer más: scait.ct.unt.edu.ar/cientifi… #SCAIT #UNT #CONICET #IMMCA #ODS4 #ODS5 #ODS10 #ODS16
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Road to Jeju: @GetGenome open call closes on 2 November, and applications have already arrived from 18 countries across five continents! getgenome.net/callforproject…
You select the isolates, we sequence the genomes — for free! 🧬 Inspired by @ISMPMI #MPMI2027, we’re pleased to announce that the latest @GetGenome Call for Projects is now open! @GetGenome “Road to Jeju” 2026 getgenome.net/callforproject…
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
This paper answers why confident idiots run the world. Cornell University published a psychological paper that explains every terrible boss, every loud influencer, and every broken corporate hierarchy. It’s called “Unskilled and Unaware of It.” they tested participants across logic, grammar, and humor to measure the gap between actual performance and self-perception. And the results are wild. participants scoring in the bottom 12th percentile consistently believed they were operating in the 62nd percentile. they were not lying. they were literally incapable of recognizing their own incompetence. the paper revealed a brutal paradox: the exact skills required to master a domain are the exact same skills required to accurately evaluate your own competence in that domain. if you lack the skill, you inherently lack the cognitive capacity to realize you are failing. this creates a dangerous systemic loop. the incompetent are blessed with absolute, blinding certainty. their brain protects them from their own ignorance, allowing them to speak first, demand authority, and never second-guess their decisions. meanwhile, the actual experts suffer the exact inverse. top performers in the study consistently underestimated their rank. because a task was easy for them, they falsely assumed it was easy for everyone else. they hesitate. they obsess over nuance. they assume they have nothing unique to add. we are biologically wired to confuse confidence with competence. the loudest person in the room gets promoted, gets funded, and gets the microphone, not because they know what they are doing, but because they are physically incapable of seeing what they don't. the only defense mechanism is building systems that stop rewarding absolute certainty and start demanding proof of work.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
LA UNT Y EL CONICET FORTALECEN EL TRABAJO CONJUNTO EN INVESTIGACIÓN CIENTÍFICA Y TECNOLÓGICA El Rector de la UNT, Mg. Ing. Sergio Mohamed, encabezó un encuentro con autoridades del CONICET NOA Sur. Leer más: scait.ct.unt.edu.ar/la-unt-y… #SCAIT #UNT #ODS4 #ODS9 #ODS17
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
"Lautaro Martinez" Porque la FIFA mostró el gol de Lautaro Martínez ante Inglaterra desde una cámara exclusiva.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
ARGENTINA: EL 1% DE LA POBLACIÓN POSEE EL 26% DE LA RIQUEZA La distribución de la riqueza en Argentina exhibe una fuerte concentración. Según datos del World Inequality Report 2026 y CELAG, el 10% más rico del país concentra el 60% de la riqueza total, mientras que el 75% de la población reúne apenas el 19%. La desigualdad también se refleja en la cima de la pirámide: el 1% más rico posee el 26% de la riqueza nacional. En el otro extremo, la mitad de la población concentra apenas el 4%, una diferencia que refleja la brecha patrimonial en el país. ¿Qué te parecen estos datos? Te leemos en los comentarios.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
🗣️"Que nuestro pueblo no solamente posea la felicidad, sino que también sepa dignamente defenderla" 🗣️"Es la ambición de mi vida: que todos los trabajadores sean un poquito más felices" - J. D. Perón. 17 de octubre de 1945.
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Fantastic symposium on protein cryo-EM at the SAMIC Congress! Inspiring talks and exciting discussions with leading experts from Argentina 🇦🇷, Brazil 🇧🇷, Chile 🇨🇱, and Uruguay 🇺🇾. Great to see the cryo-EM community growing stronger across Latin America!
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
This is a legitimately amazing paper. TL;DR: They made a microfluidic chip that can trap a million individual cells, hooked it up to a microscope, and used it to connect genetic circuits --> single-cell behaviors. Say you want to build a complicated gene circuit, like an oscillator with a period of six hours. Normally, you’d make a design, put it into cells, watch it fail, redesign it, and try again. With this system, you can instead make a million variants in a single tube, introduce them into cells, and trap those cells in the chip to see which designs work. You can then pull out a “winning” cell using optical tweezers, or identify which gene circuit it received via in situ sequencing. (Each circuit carries a short genetic barcode. You sequence the gene circuit variants beforehand to link each barcode to a design. Then, reading those barcodes inside the chip, using in situ sequencing, tells you which circuit each cell received.) This is a much more scalable way to test and optimize complex ideas in synthetic biology; not only gene circuits, but perhaps also metabolic pathways. I suspect it’ll be super useful for collecting data for predictive AI models, too. Congrats @NoahOlsman!
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
🧫 Biologists (065/BI/2026): how do bacteria get into human cells? Study cell entry with a natural model, the midbody remnant, a bacterium-sized particle released at every division, using AI-guided microscopes, and compare it with S. aureus. euraxess.ec.europa.eu/jobs/4…
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
How professors spend their time
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Virginia H. Albarracin (#LaAlbarracineta #ATeam) retweeted
Applications close on 23 October for funded ECR places at our Workshop on Bridging Scales and Disciplines to Understand Robust Development, 18-21 April 2027 organised by Mauricio Rocha Martins & Giulia Paci. Find out more and apply at biologists.com/workshops/apr… #BiologistsWorkshops
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