I'm Mark. I do lots of things. Electron microscopy is one of them.

New York, NY
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World's smallest going-away gift for @Yixiao8Yixiao. We all learned so much from you and will miss you greatly.
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You are being assimilated to the cryo-EM borg. Resistance is futile.
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The 'single particles' that make up #NYC are HIGHLY heterogeneous! #EPU
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One does not simply use the FIB, one must become the FIB. Many thanks to @timmaitland1 and Roy MacDoland for their amazing work as we go through this installation.
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Absolutely true.
attention NIH! giving David Mastronarde an extra $5M would do a lot more for the structural biology community than funding one more microscope, because his output increases the productivity of most of the cryoelectron microscopes worldwide
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Replying to @ashleighraz
Eat your heart out @LouisVuitton
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I'd like to propose another trend: in addition to hugging your Krios, why not carry your K3... this will allow you to show off your fancy DED and also your upper body strength (75 lbs!). Here it goes:
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Came across this photo while searching for another. You can see a grid held in the "chopsticks" of a dual axis(DA)fixed holder (bottom of pic). The cartridge axis is on its way to retrieve the grid to take it back to the autoloader (top of pic). New Krios systems won't have DA
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Krios 2 getting it's accelerator 😁😁
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Finally got our K3 together but can't get better than 4.2mm resolution. Wonder what is wrong.
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No side chains here, but no less beautiful and awe inspiring.
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If you're in NYC here is how you can convert your regular TEM to a temporarily dedicated cryo-TEM. 1) Turn off the heat. 2) Open your window.
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My New Year's resolution is 0.8 angstrom.
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Really awesome gift from @BethWatersNeuro . It's an old style EM micrograph. So cool! Thank you Beth!
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Had a lot of fun teaching my Cryo-EM course today!
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So heartbroken. RIP Dr.@_zewail_ A great visionary, scientist, mentor, and friend. I owe you so much. الله يرحمك
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Just picked up my copy of Sound Science! w/ Dr. Dan, Science Man!! @laser_beam
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Amazing meeting @ErnieAnastos today! I didn't get a chance to tell him about my awesome electron microscopes though!
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