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Posts by Chris Potter

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I defended my PhD 10 years ago today. That was the least remarkable thing that happened that day. Sharing something I wrote about it last year. Since then "the horrors persist but so do we." And with dignity.

4 weeks ago 1710 569 50 30

Congrats! Cool story!

2 months ago 2 0 0 0
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Mosquitoes - Alex Wild Mosquitoes comprise a large family, Culicidae, of slender, scale-covered flies found worldwide. We think of mosquitoes as voracious blood-feeders, but the primary food of adult mosquitoes is actually ...

Mosquitoes, a photo gallery:

4 months ago 70 18 6 3
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1/ Hello Drosophila-philists and braino-maniacs! 👋🪰🧠🧪

The Caron lab has a new preprint, and it is about 🥁🥁🥁 democracy!

Neuro-democracy, to be precise. So: drop EVERYTHING and listen up — a 🧶!

www.biorxiv.org/content/10.1...

5 months ago 41 18 3 1

But in general, the hsp70 gene was a convenient cloned source for promoters and terminators for making constructs back in the early 90s, and its possible that some the temp sensitive genetic components unwittingly were included in GAL4/UAS constructs.

6 months ago 0 0 1 0

It's also possible that the GAL4 protein, since it comes from yeast, is optimized in structure for yeast growth temperatures, which are closer to 32-34C. So the protein is 'happier' at higher temperatures. Given how strongly we express GAL4, I dont think we'd be able to see such effects.

6 months ago 0 0 1 0
GAL4/UAS constructs by Brand and Perrimon 1993

GAL4/UAS constructs by Brand and Perrimon 1993

It's a great question! The most likely culprit is the use of the heatshock70 terminator in the design of the GAL4 enhancer trap construct and the hsp70 promoter in the UASt vector. Its possible some temp sensitive elements might still be present.

6 months ago 0 0 1 0
Figure 1 of Riabinina et al 2015

Figure 1 of Riabinina et al 2015

Gal4 itself is not temperature sensitive. We tested this in our paper (Riabinina, Nature Methods, 2015). Additional refs to this fact also in that paper.
That being said, many GAL4 lines are temp sensitive, which likely reflects the use of temperature sensitive components.

6 months ago 2 0 1 0

Probably just The Constitution.

7 months ago 1 0 0 0
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Second U.S. Malaria Case Not Tied to Travel Raises Fears of Local Transmission One-off cases of malaria in the U.S. may become more common as warming temperatures lead to booming mosquito populations

#mosquito

8 months ago 3 1 0 0

Me three months ago:

8 months ago 16478 3752 435 110

Congrats!

9 months ago 1 0 0 0
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Johns Hopkins Gets the Most Federal Money, but Now Much of It Is at Risk

Johns Hopkins Gets the Most Federal Money, but Now Much of It Is at Risk

"The university’s troubles show how a Republican campaign against higher education could decimate the nation’s research enterprise"

www.nytimes.com/2025/06/26/u...

9 months ago 19 9 0 1
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FlyBase funding squashed amid Harvard grant terminations The team behind the Drosophila genetics database is now requesting donations from labs to keep the resource afloat.

FlyBase, a crucial resource for drosophila research, has lost its funding because its grant is awarded to Harvard. The team is scrambling to find other sources of funds, including donations from labs. Read more: www.thetransmitter.org/community/fl... @flybase.bsky.social

10 months ago 36 47 2 5

"Under the terms of the executive order, political appointees loyal to the president can willfully find justification to label any research finding as scientific misconduct"

This should terrify every single scientist in America.

10 months ago 327 165 9 4

Our experiences over the past 3 years suggest it may be valuable to understand these attacks on science as extensions of the Big Lie (of election fraud), Covid denialism, & Jim Crow 2.0 — part of a collective effort to bend reality, science & values to align with the central fantasies of Trumpism.

10 months ago 536 130 6 3
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NOT-OD-25-115: Notice of Temporary Policy Exception to NIH Grants Policy Statement (NIHGPS) Section 12.3.7 to Permit Continued Eligibility for Mentored Career Development Award When an Award Ended Ear... NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Notice of Temporary Policy Exception to NIH Grants Policy Statement (NIHGPS) Section 12.3.7 to Permit Continued Eligibi...

Could be huge. Especially for those terminated in the anti-DEI purge.

"...NIH will allow individuals whose mentored career development awards prematurely ended on or after January 1, 2025, to be eligible to apply for a new mentored career development award"

grants.nih.gov/grants/guide...

10 months ago 94 67 9 8

Congrats Silke!

10 months ago 2 0 0 0

This is fantastic!

11 months ago 1 0 0 0
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A spatial code governs olfactory receptor choice and aligns sensory maps in the nose and brain Although topographical maps organize many peripheral sensory systems, it remains unclear whether olfactory sensory neurons (OSNs) choose which of the ~1100 odor receptors (ORs) to express based upon t...

Maps are everywhere in the brain...and finally we've discovered one in the nose! Led by @davidhbrann.bsky.social, we uncovered the logic that specifies the positions of each of the 1,000 sensory neuron subtypes in the nose and aligns their projections to the brain.👇👃see more details below👃👇

11 months ago 148 52 5 2
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Interested in a PhD connecting sensory ecology and evolutionary genetics? Applications are now open for a project on the Speciation Genomics of Eye Size Variation in Heliconius Butterflies in our lab at LMU Munich: www.evol.bio.lmu.de/research/mer... Please repost!

11 months ago 101 100 0 4

Great job! Your parents must have been so proud!
I really hope you get your R01 grant funding. The research sounds fascinating and important.

11 months ago 3 0 0 0
Kara Marshall PHD-History of Science in America - Trilogy at Tehaleh 04/27/25
Kara Marshall PHD-History of Science in America - Trilogy at Tehaleh 04/27/25 YouTube video by Steve Lawson

Gave a talk at my parents’ retirement community to describe how science is done, and what is at stake. There was a ton of interest, and anyone can do this. Get the word out about how science affects everyone. I’m happy to share slides with anyone who asks- just get in touch! youtu.be/BY_SFgi-Cig

11 months ago 278 80 17 8
"WE'VE ARRANGED A society based on science and technology, in which nobody understands anything about science technology. And this combustible mixture of ignorance and power, sooner or later, is going to blow up in our faces. Who is running the science and technology in a democracy if the people don't know anything about it?"
"Science is more than a body of knowledge, it's a way of thinking. A way of skeptically interrogating the universe with a fine understanding of human fallibility. If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then we're up for grabs for the next charlatan, political or religious, who comes ambling along."

"WE'VE ARRANGED A society based on science and technology, in which nobody understands anything about science technology. And this combustible mixture of ignorance and power, sooner or later, is going to blow up in our faces. Who is running the science and technology in a democracy if the people don't know anything about it?" "Science is more than a body of knowledge, it's a way of thinking. A way of skeptically interrogating the universe with a fine understanding of human fallibility. If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then we're up for grabs for the next charlatan, political or religious, who comes ambling along."

I think a lot about what Carl Sagan said in one of his final interviews.

11 months ago 18490 6286 246 278
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🧪 Though a doubling of NSF's budget might seem far-fetched, that's exactly what Congress said what's needed to maintain national competitiveness in science & tech.

From the bipartisan CHIPS and Science Act of 2022:

11 months ago 192 95 2 3

Proposed new term for members of the Trump administration committing and supporting this behavior

CICADAS

Cowardly Information, Content, And Data Analysis Suppressors

11 months ago 16 4 1 0
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Puppets…

11 months ago 24086 5297 471 203

The Human Genome Project cost taxpayers $3 Billion.

Two decades on, it has generated a staggering return on investment of $1 Trillion, with benefits in medicine, agriculture, energy, the environment, & more.

If you want to boost the economy, funding science is one of the best things you could do.

11 months ago 3762 1163 54 42

Time to catch up on the past week’s news about science and medicine in the US. Whew. 1/10

11 months ago 651 353 26 89
Michael Ashburner. 23 May 1942—7 July 2023: 23 May 1942 — 7 July 2023: Biographical Memoirs of Fellows of the Royal Society: Vol 0, No 0 Michael Ashburner had an extraordinary career. From his early passion for natural history, through his education and subsequent career at the University of Cambridge, Michael’s intellectual energy and...

An appreciation of the late great and much missed Michael Ashburner, by @steverus.bsky.social and Rachel Drysdale.

11 months ago 8 6 0 1