Wallace Marshall
@wallaceucsf.bsky.social
professor at UCSF, engineer turned cell biologist, wants to know how cells solve geometry problems
Reposted by Wallace Marshall
Some cells are just in it for the drama!
The bottom 5 microns of cells videoed through a microscope by @EmmaKoory. The middle cell rounds up (for fun?) and subsequently rounds up to divide. We missed so much of the action by just sampling the bottom. @CellBiology
The bottom 5 microns of cells videoed through a microscope by @EmmaKoory. The middle cell rounds up (for fun?) and subsequently rounds up to divide. We missed so much of the action by just sampling the bottom. @CellBiology
November 24, 2025 at 9:19 PM
Some cells are just in it for the drama!
The bottom 5 microns of cells videoed through a microscope by @EmmaKoory. The middle cell rounds up (for fun?) and subsequently rounds up to divide. We missed so much of the action by just sampling the bottom. @CellBiology
The bottom 5 microns of cells videoed through a microscope by @EmmaKoory. The middle cell rounds up (for fun?) and subsequently rounds up to divide. We missed so much of the action by just sampling the bottom. @CellBiology
Reposted by Wallace Marshall
Reposted by Wallace Marshall
SEN. KELLY : “They informed me of this in a tweet because this is not about the law. This is about the media cycle, and intimidation… We basically repeated the uniform code of military justice, and they're saying that's in violation of it. It's absurd. Comical.”
November 25, 2025 at 3:15 AM
SEN. KELLY : “They informed me of this in a tweet because this is not about the law. This is about the media cycle, and intimidation… We basically repeated the uniform code of military justice, and they're saying that's in violation of it. It's absurd. Comical.”
Reposted by Wallace Marshall
Weird word of the day: "kleptosquamy." The testate amoeba Awerintzewia cyclostoma steals scales from other amoeboid organisms to build its own shell. This one has robbed Quadrulella, Netzelia, various euglyphids, and even an Acanthocystis. Kleptosquamy! #amoebae #ProtistsOnSky #biology #nature
November 21, 2025 at 12:00 AM
Weird word of the day: "kleptosquamy." The testate amoeba Awerintzewia cyclostoma steals scales from other amoeboid organisms to build its own shell. This one has robbed Quadrulella, Netzelia, various euglyphids, and even an Acanthocystis. Kleptosquamy! #amoebae #ProtistsOnSky #biology #nature
Reposted by Wallace Marshall
now i've seen everything... 😱
don't care what anybody says but #protists are cognitive
don't care what anybody says but #protists are cognitive
Cellular structure self-organizes through an interplay between internal mechanisms and external cues. The single-celled suctorian P. collini builds a trap structure to capture large prey using microtubule feeding tentacles, creating feedback between cell morphology and prey availability.
November 19, 2025 at 1:46 PM
now i've seen everything... 😱
don't care what anybody says but #protists are cognitive
don't care what anybody says but #protists are cognitive
Reposted by Wallace Marshall
Students attending the departmental seminar just for the refreshments
November 11, 2025 at 5:29 PM
Students attending the departmental seminar just for the refreshments
Reposted by Wallace Marshall
Good morning to all those people who wasted the last decade saying, "there's no point tackling climate change in the UK, because China."
www.theguardian.com/world/2025/n...
www.theguardian.com/world/2025/n...
China’s CO2 emissions have been flat or falling for past 18 months, analysis finds
World’s biggest polluter on track to hit peak emissions target early but miss goal for cutting carbon intensity
www.theguardian.com
November 11, 2025 at 7:08 AM
Good morning to all those people who wasted the last decade saying, "there's no point tackling climate change in the UK, because China."
www.theguardian.com/world/2025/n...
www.theguardian.com/world/2025/n...
Wound healing is a hallmark feature of all life, including single cells. In a new preprint, Ambika Nadkarni @biochembika.bsky.social investigates a new dimension in cellular wound healing: how cells recover AFTER the wound has been closed
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
November 10, 2025 at 5:47 PM
Wound healing is a hallmark feature of all life, including single cells. In a new preprint, Ambika Nadkarni @biochembika.bsky.social investigates a new dimension in cellular wound healing: how cells recover AFTER the wound has been closed
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Wallace Marshall
Garfield is the guy, actually he's called Garfield's monster
November 8, 2025 at 4:03 AM
Garfield is the guy, actually he's called Garfield's monster
Reposted by Wallace Marshall
Same - solutions?
Several of our students have run into an issue where their "official transcript" is password protected/encrypted which prevents them from being able to upload. If they un-encrypt the document, it removes the "official transcript" watermark.
Complete Catch-22 here, does anyone have a work around?
Complete Catch-22 here, does anyone have a work around?
Warning. ⚠️ If you are writing an NSF GRFP, new this year, you need official transcripts to apply. Beware. They will not review applications without official transcripts. ‼️
November 7, 2025 at 2:13 AM
Same - solutions?
Reposted by Wallace Marshall
Trump tries to build a fake wall of inevitability around everything he does.
Today, voters - literally from sea to shining sea - broke through all that, and this is just the beginning.
Today, voters - literally from sea to shining sea - broke through all that, and this is just the beginning.
November 5, 2025 at 4:05 AM
Trump tries to build a fake wall of inevitability around everything he does.
Today, voters - literally from sea to shining sea - broke through all that, and this is just the beginning.
Today, voters - literally from sea to shining sea - broke through all that, and this is just the beginning.
Reposted by Wallace Marshall
Congratulations to all the Democratic candidates who won tonight. It’s a reminder that when we come together around strong, forward-looking leaders who care about the issues that matter, we can win. We’ve still got plenty of work to do, but the future looks a little bit brighter.
November 5, 2025 at 2:47 AM
Congratulations to all the Democratic candidates who won tonight. It’s a reminder that when we come together around strong, forward-looking leaders who care about the issues that matter, we can win. We’ve still got plenty of work to do, but the future looks a little bit brighter.
Fastest half - but still very slow…
November 2, 2025 at 11:07 PM
Fastest half - but still very slow…
Almost show-time at the Bay Area Science Festival. Come see how cells can learn! If you can’t make it, you can find out about the super-powers of time organisms at the Nature’s Tiny Marvels web site: sites.google.com/view/natures...
October 25, 2025 at 4:58 PM
Almost show-time at the Bay Area Science Festival. Come see how cells can learn! If you can’t make it, you can find out about the super-powers of time organisms at the Nature’s Tiny Marvels web site: sites.google.com/view/natures...
Reposted by Wallace Marshall
“having children play with the Lego set before their own MRI scans has significantly helped decrease anxiety and increase familiarity with the procedure.” www.cnbc.com/2025/10/13/l...
How Lego MRI scanner sets are reducing anxiety in children undergoing medical treatment
Lego's MRI scanner play sets, which launched in 2023, are significantly reducing anxiety and the use of sedation in children, according to new research.
www.cnbc.com
October 20, 2025 at 1:12 PM
“having children play with the Lego set before their own MRI scans has significantly helped decrease anxiety and increase familiarity with the procedure.” www.cnbc.com/2025/10/13/l...
Weekend fun little project - my first foray into LED-DTL logic which uses the large voltage drop of an LED to simplify the classic “diode-transistor logic”. Here is an AND gate
October 19, 2025 at 2:55 PM
Weekend fun little project - my first foray into LED-DTL logic which uses the large voltage drop of an LED to simplify the classic “diode-transistor logic”. Here is an AND gate
Reposted by Wallace Marshall
Our collaboration with @mbonhivers.bsky.social is now out in @plosbiology.org! 🎉Using U-ExM, we mapped the formation of the flagellar pocket collar in T. brucei. Huge thanks to everyone involved — one step closer to #PhDone!
#ExM #oneringtorulethemall #Bilbo1 #trypanosoma #protistsonsky
#ExM #oneringtorulethemall #Bilbo1 #trypanosoma #protistsonsky
The flagellar pocket collar (FPC) is a cytoskeletal structure essential for nutrient uptake & immune evasion in #Trypanosome. @mbonhivers.bsky.social &co use U-ExM to provide novel insights into FPC biogenesis, and reveal 2 unknown cytoskeletal structures @plosbiology.org 🧪 plos.io/4n3bWi6
October 10, 2025 at 6:47 PM
Our collaboration with @mbonhivers.bsky.social is now out in @plosbiology.org! 🎉Using U-ExM, we mapped the formation of the flagellar pocket collar in T. brucei. Huge thanks to everyone involved — one step closer to #PhDone!
#ExM #oneringtorulethemall #Bilbo1 #trypanosoma #protistsonsky
#ExM #oneringtorulethemall #Bilbo1 #trypanosoma #protistsonsky
Are you in/near the SF Bay Area? Do you like Science? What about Festivals? Then you might want to check out the Bay Area Science Festival Oct 25. I’ll be there showing how single cells can learn!
www.bayareasciencefestival.org
www.bayareasciencefestival.org
Home - Bay Area Science Festival
Bring the whole family to experience 100+ jaw-dropping demonstrations, hands-on experiments, astounding games, behind the scenes lab tours, film screenings
www.bayareasciencefestival.org
October 7, 2025 at 3:13 PM
Are you in/near the SF Bay Area? Do you like Science? What about Festivals? Then you might want to check out the Bay Area Science Festival Oct 25. I’ll be there showing how single cells can learn!
www.bayareasciencefestival.org
www.bayareasciencefestival.org
had a fun joint opening lecture for #UCSFTetrad Cellbio course with @nachury - but a question arose about eukaryotic evolution: if asgards used symbiotic bacteria for respiration, is there similarity with how RBCs use the liver for respiration? is the alanine cycle a vestige of eukaryogenesis?
September 24, 2025 at 1:45 AM
had a fun joint opening lecture for #UCSFTetrad Cellbio course with @nachury - but a question arose about eukaryotic evolution: if asgards used symbiotic bacteria for respiration, is there similarity with how RBCs use the liver for respiration? is the alanine cycle a vestige of eukaryogenesis?
Reposted by Wallace Marshall
A molecular-resolution look into the near-native architecture of the spinach chloroplast🌱. This one was a long time in the oven, but we're happy to finally share our "version of record". What long-standing debates did we settle? Check back for a short thread🧵 on Monday. #TeamTomo #PlantScience 🧪🧶🧬🔬🌾
🌱 Using ‘compelling’ methods, including #CryoET, researchers mapped spinach thylakoid membranes at single-molecule precision, revealing how photosynthetic complexes are organised and settling long-standing debates on chloroplast architecture.
buff.ly/j3TSIkn
buff.ly/j3TSIkn
September 20, 2025 at 7:24 PM
A molecular-resolution look into the near-native architecture of the spinach chloroplast🌱. This one was a long time in the oven, but we're happy to finally share our "version of record". What long-standing debates did we settle? Check back for a short thread🧵 on Monday. #TeamTomo #PlantScience 🧪🧶🧬🔬🌾
Reposted by Wallace Marshall
Again I am years behind: I have only recently noticed that critical information such as equal-contribution authorship is lost in important platforms such as PubMed, Google Scholar, ORCID...
Fairness is critical to every one. Why nothing has been done to correct this?
Something needs to be done!
Fairness is critical to every one. Why nothing has been done to correct this?
Something needs to be done!
September 20, 2025 at 6:19 PM
Again I am years behind: I have only recently noticed that critical information such as equal-contribution authorship is lost in important platforms such as PubMed, Google Scholar, ORCID...
Fairness is critical to every one. Why nothing has been done to correct this?
Something needs to be done!
Fairness is critical to every one. Why nothing has been done to correct this?
Something needs to be done!
Proud (and surprised) to be awarded a UCSF Medical School Excellence in Teaching Award! Celebrating here with my REGN module colleagues Igor Mitrovic and Kathy Hyland
September 18, 2025 at 1:33 AM
Proud (and surprised) to be awarded a UCSF Medical School Excellence in Teaching Award! Celebrating here with my REGN module colleagues Igor Mitrovic and Kathy Hyland
September 12, 2025 at 10:56 AM
Reposted by Wallace Marshall
Next week, we have Ulises Diaz from UCSF giving us a talk in the Physical Properties of the Cytoplasm online seminar series. For more info, visit cytophys.org. Join us.
September 11, 2025 at 2:00 PM
Next week, we have Ulises Diaz from UCSF giving us a talk in the Physical Properties of the Cytoplasm online seminar series. For more info, visit cytophys.org. Join us.
congratulations to vincentv boudreau and @aralbright.bsky.social for winning the MBoC Paper of the Year award from @ASCBiology for their work on the cell biology and genome of Stentor pyriformis www.ascb.org/society-news...
www.ascb.org
September 10, 2025 at 5:37 PM
congratulations to vincentv boudreau and @aralbright.bsky.social for winning the MBoC Paper of the Year award from @ASCBiology for their work on the cell biology and genome of Stentor pyriformis www.ascb.org/society-news...