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Cake day: June 12th, 2023

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  • That’s the case for most species.

    As a very specific and highly functional example of critical viral proteins in other organisms, there wouldn’t be any placental mammals without viruses. https://en.m.wikipedia.org/wiki/Placenta

    Mammalian placentas probably first evolved about 150 million to 200 million years ago. The protein syncytin, found in the outer barrier of the placenta (the syncytiotrophoblast) between mother and fetus, has a certain RNA signature in its genome that has led to the hypothesis that it originated from an ancient retrovirus: essentially a virus that helped pave the transition from egg-laying to live-birth.











  • I see. You can open just about anything, something like 18 formats, it’s on their website. I prefer epub, but it can open Kindle’s mobi etc. That’s why I bought it, I got a large library of pdbs.

    I have Touch HD 3, I had some Touch Lux before. I had it for a while, don’t know their newest models. But yes, not only would I buy it again, I already did, just bought a newer version. Unless I was looking for something for hand note taking, I wouldn’t change. What I dislike is that when you break the screen, it’s expensive to replace, so I just bought a new one instead. Nothing you wouldn’t be used to from phones. And I’d very much like to have an option to disable the touch layer of the screen by long press of one of the physical buttons, but it’s a minor issue. What I like is the tunable intensity and colour temperature of the light and I’m quite happy with everything else. You can upload books by sending them as an attachment to a special email. If you don’t like the interface for reading the books, you can even quite easily replace it with Cool reader. I tried it before, but I didn’t do it in the newest one. You can use dictionaries, some are preinstalled, or use notes and highlights, but I don’t have experience with that.


  • I agree with the other reply that pdfs are terrible for e-readers. That being said, Pocketbooks can open them (which is not that common) and it is possible to read them, although it isn’t so comfortable, especially for A4 pdfs. It can also open wide range of other formats and I’m quite happy with it in general. You can connect it to a computer and simply copy your books there, among other means of getting books there. But I have to say I have no first hand experience with competition.




  • You don’t need profit in the sense of making lots of extra money compared to how much money you actually put in. I would be very interested in how much net profit is compared to gross in relative numbers. It’s a lot in absolute numbers, but I suspect not so much in relative. The problem why drug development is so very expensive is that you don’t just pay large sums for the drugs that are developed, but also for all those that are not, because they prove not useful during the testing. And there is way, way more than the successful ones, perhaps 100 to 1? I don’t have numers at hand. So in the end, you have to charge a lot of extra money above the production cost if you want to have enough money to develop any drugs at all.

    Of course, that isn’t true for old drugs. Which is a reason why generics are so much cheaper. And also why patents need to exist.

    I’m sure pharma companies abuse the system as much as they can, but not as much as it might appear at a first glance.





  • I would just add that it’s a gradient of transcription factor(s), proteins that regulate production of other proteins. Some of the regulated proteins are other thranscription factors that create finer gradients, like repeated stripes of gradients. along the initial, single gradient. This can be repeated on multiple levels so that pretty much every point of the body has unique combination of transcription factors. This combination triggers all the other proteins, including structural that create the form of the body. and of course, all this doesn’t just happen in 3D, but also changes with time. It’s complicated.

    For illustration and possible direction for some particular interesting cases wrapped in a very entertaining package, I recommend this: https://www.youtube.com/watch?v=ydqReeTV_vk