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Joined 1 year ago
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Cake day: June 10th, 2023

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  • Compare the amount of protein that is in a flu shot (60 micrograms in Fluzone at most) to a typical mAb (~150 mg up to 1 g at most), you can see how much less the vaccine requires

    And with mRNA you get extra amplification from each mRNA being translated multiple times. Then again an mRNA is a lot more massive than its protein product.



  • > > Why is the amount of DNA in plants so much lower than in animal tissue? Is this because plant cells are larger? (some plants like wheat have very large genomes, I wonder how that affects it too)

    They are quoting the DNA concentration in g per kg of dry matter.

    Plant cells have cell walls of cellulose, hemicellulose and pectin, which adds some dry weight that is absent in animals.

    In addition, these seeds and tubers etc. we eat tend to be energy storage organs with a whole bunch of starch vs. not very much regular cell mass. It would be the same way if you ground up bone tissue and measured the DNA concentration.

    Are cells lining the intestine replaced frequently? and which population of stem cells do they come from?

    Yes, very frequently. There are stem cells in the crypts between villi of the duodenum, for example.



  • CrateDane@feddit.dktoTechnology@beehaw.orgMastodon?
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    1 year ago

    Mastodon is substantially more active than Lemmy thus far. It’s a different type of medium to Lemmy, so what you want to use is up to you.

    Personally I use both, but just like I was spending much more time on reddit than twitter, I’d like to spend more time on Lemmy than Mastodon. I have also found Lemmy a little more intuitive to use initially, so it might be worth spending a couple weeks getting used to how the fediverse works before jumping into Mastodon.