Pengning Xu
@pengningxu.bsky.social
current postdoc Hahn lab @UNC: single particle tracking with Cdc42 biosensor; Phd Weninger lab @NCSU: DNA repeat structures & dynamics using smFRET; anime lover
Reposted by Pengning Xu
Periodic reminder that the fluorescent compound in mammalian cell culture media, such as DMEM, is riboflavin (not phenol red)
October 14, 2025 at 7:51 PM
Periodic reminder that the fluorescent compound in mammalian cell culture media, such as DMEM, is riboflavin (not phenol red)
Reposted by Pengning Xu
Reposted by Pengning Xu
😥💔
Lyft driver picked me up from UNC, turned out he was a medicinal chemistry post-doc in a building near mine, until his grant got cut last month.
Worked on novel antivirals.
Worked on novel antivirals.
June 6, 2025 at 1:54 AM
😥💔
Next gen Rhodamine dye?
A suite of bridged rhodamine dyes for fluorescence microscopy, named BriDyes, offers excellent brightness, photostability, solubility, cell permeability, and resistance to photoblueing.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
May 20, 2025 at 4:18 AM
Next gen Rhodamine dye?
Spent some time building a customized dual view system in the lab. Adopted a Y-shape path to allow focus adjustment and fit in enough space on the air table. Fun experience!
May 18, 2025 at 10:25 PM
Spent some time building a customized dual view system in the lab. Adopted a Y-shape path to allow focus adjustment and fit in enough space on the air table. Fun experience!
Reposted by Pengning Xu
This is the time of year many scientists are going on the academic job market. I try to provide some guidance on chalk talks in this essay. Please share. www.molbiolcell.org/doi/full/10....
How to design a chalk talk—the million dollar sales pitch | Molecular Biology of the Cell
Each faculty recruiting season, many postdocs ask, “What is a chalk talk?” The chalk talk is many things—a sales pitch, a teaching demonstration, a barrage of questions, and a description of a future ...
www.molbiolcell.org
December 19, 2024 at 9:50 PM
This is the time of year many scientists are going on the academic job market. I try to provide some guidance on chalk talks in this essay. Please share. www.molbiolcell.org/doi/full/10....
Reposted by Pengning Xu
Reposted by Pengning Xu
Klaus Hahn has some classic movies of manually directing migration: tinyurl.com/49ftza3h. The Weiner lab use HL60 (v fast) continually illuminating one side: tinyurl.com/mryvy9m7 . Here is an example of our automatic guidance of HT1080 (slower) to specific paths, look out for a bioRxiv upload soon!🌀
December 8, 2024 at 2:00 PM
Klaus Hahn has some classic movies of manually directing migration: tinyurl.com/49ftza3h. The Weiner lab use HL60 (v fast) continually illuminating one side: tinyurl.com/mryvy9m7 . Here is an example of our automatic guidance of HT1080 (slower) to specific paths, look out for a bioRxiv upload soon!🌀
Reposted by Pengning Xu
insane story and another reason american healthcare is broken.
so sorry for your loss, Daniel
so sorry for your loss, Daniel
Storytime.
In 2005, my mom died from cancer, but the real cause was the actions taken by an insurance company 12 years earlier. What happened to her was evil, hard to identify or fight, and hidden from the public by legal mechanisms. Because of that, I have no idea how often it has happened.
In 2005, my mom died from cancer, but the real cause was the actions taken by an insurance company 12 years earlier. What happened to her was evil, hard to identify or fight, and hidden from the public by legal mechanisms. Because of that, I have no idea how often it has happened.
December 8, 2024 at 3:23 PM
insane story and another reason american healthcare is broken.
so sorry for your loss, Daniel
so sorry for your loss, Daniel