965 Matching Annotations
  1. Jan 2023
    1. Manolis Kellis: Origin of Life, Humans, Ideas, Suffering, and Happiness | Lex Fridman Podcast #123

      My summary:

      Biology: * Life = energy + self preservation * Neanderthals could be the reason why wolves/dogs are living closely with humans. Maybe in the past generations, dogs had no choice but to live with humans as they were scared of our power? * People evolved from the deep ocean (we're made in 70% of water). We're like transporting the sea with us now * Dolphins as mammals came back into the water * RNA invented proteins. Later RNA and proteins created DNA * Life is like any kind of self-reinforcement such as self-reinforcement of RNA molecules which lead to the evolution process * Europa (moon of Jupiter) already evolves some non-DNA life there. Life could exist in its under-ice ocean, perhaps in an environment similar to Earth's deep-ocean hydrothermal vents. It will be fascinating to get to know it

      Life: * Don't focus on goals but have a path to prevent the "rat race" sort of feeling * Almost every Hollywood movie has a happy ending. It prepares us, humans, really poorly for the bad times in life We need to read/watch more stories with a bad ending * Life is about accomplishing things, not about being happy all the time * As a parent, don't ask your kid if he's happy but what he's struggling to achieve * Most likely, we live on the best planet during the best time as the most beautiful mammals * If you understand yourself, you won't seek self-assurance in what other people think of you * It's hard to get to know your true self if you live all the time in the same location/environment and have the same friends who would like to have a stable image of you

    1. Finally, we demonstrated that LFA-1, the protein exclusively expresses in multiple leukocytes, is more likely the entry molecule that mediated SARS-CoV-2 infection in T cells, compared to a list of other known receptors. Collectively, this work confirmed a SARS-CoV-2 infection of T cells, in a spike-ACE2-independent manner, which shed novel insights into the underlying mechanisms of SARS-CoV-2-induced lymphopenia in COVID-19 patients.

      Another receptor involved in covid19

  2. Dec 2022
  3. Nov 2022
    1. The several panels show what happens in each cycle. Each cycle consists of a denaturation step at a temperature higher than the melting temperature of the duplex DNA (e.g. 95 oC ), then an annealing step at a temperature below the melting temperature for the primer-template (e.g. 55 oC), followed by extension of the primer by DNA polymerase using dNTPs provided in the reaction. This is done at the temperature optimum for the DNA polymerase (e.g. 70 oC for a thermostable polymerase). Thermocylers are commercially available for carrying out many cycles quickly and reliably
      • Denature
      • Annealing primer
      • Synthesize new DNA with polymerase
      • High speed
      • Extreme sensitivity
  4. Oct 2022
  5. Sep 2022
    1. Many of the molecules in a cell are polymers of various smaller molecules.

      Polymers are combinations of smaller molecules. This is impressive.

    2. nucleotide has 3 basic components

      This is helpful information. Phosphate is critical.

    1. histones are positively charged molecules

      Ah ha! Histones are molecules. And proteins.

    2. Histones are positively charged proteins that wrap up DNA through interactions between their positive charges and the negative charges of DNA.

      Are histones molcules?

  6. Aug 2022
  7. Jul 2022
    1. FollowingSimondon’s social theory [37] and our previous work [10 ], social systems are themselves individualsthat harbour in them preindividual forces of transformation. Therefore we do not see in the currentorganization of personhood, inasmuch as it seems unassailable, a final unchangeable state of affairs.

      !- references : evolutionary biology * Evolutionary biologists have developed similar ideas to explain how throughout history, groups of individual organisms that clustered together and discovered better fitness as a result of symbiotic relationships began to reproduce as a whole new entity. Hence the collective became the new individual * Robin et al. paper: https://hyp.is/go?url=https%3A%2F%2Fwww.frontiersin.org%2Farticles%2F10.3389%2Ffevo.2021.711556%2Ffull&group=world * Robin et al. video presentation: https://hyp.is/go?url=http%3A%2F%2Fdocdrop.org%2Fvideo%2F6J-J72GoqhY%2F&group=world * Stuart West video: https://hyp.is/go?url=http%3A%2F%2Fdocdrop.org%2Fvideo%2FVUfNEHl44hc%2F&group=world

  8. Jun 2022
    1. https://www.scientificamerican.com/article/the-complicated-legacy-of-e-o-wilson/

      I can see why there's so much backlash on this piece.

      It could and should easily have been written without any reference at all to E. O. Wilson and been broadly interesting and true. However given the editorial headline "The Complicated Legacy of E. O. Wilson", the recency of his death, and the photo at the top, it becomes clickbait for something wholly other.

      There is only passing reference to Wilson and any of his work and no citations whatsoever about who he was or why his work was supposedly controversial. Instead the author leans in on the the idea of the biology being the problem instead of the application of biology to early anthropology which dramatically mis-read the biology and misapplied it for the past century and a half to bolster racist ideas and policies.

      The author indicates that we should be better with "citational practices when using or reporting on problematic work", but wholly forgets to apply it to her own writing in this very piece.

      I'm aware that the magazine editors are most likely the ones that chose the headline and the accompanying photo, but there's a failure here in both editorial and writing for this piece to have appeared in Scientific American in a way as to make it more of a hit piece on Wilson just days after his death. Worse, the backlash of the broadly unsupported criticism of Wilson totally washed out the attention that should have been placed on the meat of the actual argument in the final paragraphs.

      Editorial failed massively on all fronts here.


      This article seems to be a clear example of the following:

      Any time one uses the word "problematic" to describe cultural issues, it can't stand alone without some significant context building and clear arguments about exactly what was problematic and precisely why. Otherwise the exercise is a lot of handwaving and puffery that does neither side of an argument or its intended audiences any good.

    2. Second, the application of the scientific method matters: what works for ants and other nonhuman species is not always relevant for health and/or human outcomes. For example, the associations of Black people with poor health outcomes, economic disadvantage and reduced life expectancy can be explained by structural racism, yet Blackness or Black culture is frequently cited as the driver of those health disparities. Ant culture is hierarchal and matriarchal, based on human understandings of gender. And the descriptions and importance of ant societies existing as colonies is a component of Wilson’s work that should have been critiqued. Context matters.

      The author is going in two opposite directions here and neither match up. A massive swath of our medicine research is wholly based on translational genetics. (That is, our basic research on organisms like flies (drosophila), worms (C. elegans), zebrafish, mice, rats, primates, etc. is contingent on moving medicines applicable to simpler genetic models in these animals will also work for humans who share large amounts of genetic material as the result of evolutionary dynamics. Sure some of it may not be relevant for humans because of both genetic and epigenetic (environmental) factors, but generally we expect that more will than won't.

      This basic fact is wholly separate from the health disparities issue. While there are some (and few of these are generally scientists in my experience) who believe that culture is the driving factor, there is enough proof to show that structural racism is the driving factor in almost all cases. I'm unaware of any translational genetic work on ant culture into human culture in any of the scientific literature and she certainly doesn't cite any to provide any sort of evidence to the contrary. As a result, she isn't providing any context at all.

  9. May 2022
    1. <details open> <summary>
      Nanotate Annotations Samples
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  10. Apr 2022
  11. Mar 2022
    1. CellPaint-VR, virtual-reality software that takes users into the cellscape.

      I want this software.

    2. A poster hanging in many labs shows the Roche Biochemical Pathways diagram, a flowchart of cellular metabolism.

      This is the poster to look for, alike with the one with pork's meat parts.

    1. two-thirds of common large moth species have declined over the last 40 years in some parts of world. One of main reasons for the decline is light pollution (an increase in artificial light in moth habitats).

      Artificial Light pollution endangering moth species

  12. Feb 2022
  13. Jan 2022
    1. Frere, J. J., Serafini, R. A., Pryce, K. D., Zazhytska, M., Oishi, K., Golynker, I., Panis, M., Zimering, J., Horiuchi, S., Hoagland, D. A., Moller, R., Ruiz, A., Overdevest, J. B., Kodra, A., Canoll, P. D., Goldman, J. E., Borczuk, A. C., Chandar, V., Bram, Y., … tenOever, B. (2022). SARS-CoV-2 infection results in lasting and systemic perturbations post recovery (p. 2022.01.18.476786). https://doi.org/10.1101/2022.01.18.476786

    1. https://www.noemamag.com/the-other-invisible-hand/?utm_source=indieweb&utm_medium=social&utm_campaign=indieweb

      Raw capitalism mimics the logic of cancer within our body politic.


      Folks who have been reading David Wengrow and David Graeber's The Dawn of Everything are sure to appreciate the sentiment here which pulls in the ideas of biology and evolution to expand on their account and makes it a much more big history sort of thesis.

    2. Speaking of such lessons, Wilson and John Gowdy write, “the invisible hand metaphor can be justified … for humans in addition to nonhuman species, [only] when certain conditions are met.”

      Which conditions? How broad are they?

    3. Unfortunately, the ideas most economists use have been too influenced by “methodological individualism,” rather than the more scientifically supported view of us as a super-social, super-cooperative, intensely interdependent species. Often, this economics-style individualism is of the Thomas Hobbes variety, which paints humans in “a state of nature,” waging a “war of all against all.”

      This statement in the framing of biology is quite similar to the framing in anthropology and archaeology that David Graeber and David Wengrow provide in The Dawn of Everything.

      Perhaps we should be saying (especially from a political perspective): Cooperation is King!

    4. Unregulated parts can kill their wholes. 

      This is true in so many domains and not just biology.

  14. Dec 2021
    1. Translational kinetics of mRNA-LNP delivered by different routes in vivo. Quantification of the bioluminescent signal measured in BALB/c mice injected with (A) 0.1 μg, (B) 1.0 μg or (C) 5.0 μg mRNA-LNPs by intradermal (i.d.), intramuscu

      Diagrams of the presence of proteins versus time in various administration methods in mouse

  15. Nov 2021
    1. high school students learning of biology online in the Netherlands

      high school students learning of biology online in the Netherlands

  16. Oct 2021
    1. Following IM administration, the maximum concentration (Cmax) of the injection site muscle was 5,680 ng/mL, and the level declined with an estimated t1/2 of 18.8 hr

      Vaccine's halg-life was measured just below a day for mice muscles.

    2. The spleen and liver had a mean Cmax of 86.9 ng/mL

      Spleen & liver had x30 less mRNA concentration than Lymph nodes closest to the vaccine site, and x70 less the injected muscle.