Why do some vaccines require a booster shot a few weeks later after the first one? |
- Why do some vaccines require a booster shot a few weeks later after the first one?
- Do people who are injured more regularly heal faster?
- Do Drug Trials get Peer-reviewed? (Related to Pfizer's COVID vaccine that's supposedly 95% effective)
- AskScience AMA Series: I'm Kostas Kampourakis, a science educator at the University of Geneva, author of Understanding Evolution, published by Cambridge University Press, and editor of the CUP book series Understanding Life. Ask me anything about evolutionary theory, the unifying theory of biology.
- If the human brain doesn't have pain receptors why do people get headaches?
- Does the fallopian tube bring any interstitial "junk" into the uterus, and if so how does the body deal with it?
- How much do we know about mRNA vaccines?
- How viable is the theory of the 'Big Crunch', where gravitational forces get stronger than expansive forces, and the universe eventually crunches itself up over time, potentially creating another big bang?
- If you're immune to a virus, does it still "enter your system" before your immune system fights it off, or it is blocked from entry/replication entirely?
- After hearing about how human hearing is logarithmic, A question for the scientists out there. If you want something to sound twice as loud, how much louder does the power have to be multiplied by?
- What are the actual mortality rates for covid by comorbidity?
- Is there an electron - neutron bound state?
- What happens to serotonin after it binds with postsynaptic proteins?
- Is the weight of a line distributed throughout the line, or is it "felt" at every point along the line?
- Is it possible for a species to evolve to be symbiotic with a virus?
- How does the product Zanfel work on Poison Ivy Exposure?
- Does the success of the Covid-19 vaccine mean that they will stop the trials?
- Why are noodles made from some starches clear, while noodles made from other starches opaque?
- Is there such a thing as vacuum rated grease for rotary mechanisms on spacecraft? Or are all those components sealed and pressurized?
| Why do some vaccines require a booster shot a few weeks later after the first one? Posted: 18 Nov 2020 04:09 PM PST |
| Do people who are injured more regularly heal faster? Posted: 19 Nov 2020 04:02 AM PST I've been doing some teaching which has required me to provide some blood so that we can demonstrate blood typing with agglutinins. In order to obtain the blood I've been using disposable lancets like a diabetic person would use on my fingers. When I'm not in the lab I'm an avid gamer so I've really started to notice the small wounds on my fingers after doing this twice a day for a week. I wonder whether diabetic people who have to do this regularly for life heal more quickly? Or do they just put up with it without moaning unlike myself I am not particularly well versed in the mechanisms of wound healing, however I would think that regular injury of a particular tissue could lead to up regulation of genes related to these pathways within those tissues and thus faster healing? [link] [comments]  |
| Posted: 18 Nov 2020 10:27 AM PST Hi everyone! I currently have a discussion with my friend about whether or not having Pfizer's trials get peer-reviewed. From my understanding, the approval process for new drugs are stringent enough to make peer-review unnecessary. So do drug trial results get peer-reviewed? [link] [comments]  |
| Posted: 19 Nov 2020 04:00 AM PST Hi Reddit! I'm a biologist by training, and the author and editor of several books about science. I have written extensively on the teaching and the public understanding of evolution, genetics and nature of science. My research and writings are interdisciplinary, combining insights from science, history of science, philosophy of science and psychology. I believe that scholars should do our society a service by serving as public intellectuals who educate non-experts on topics, and this is a contribution I would very much like to make through my books. Evolution is one of the most important ideas in science, yet evolutionary theory has been - and still is - hotly debated in the public sphere. But why do the debates about evolution persist, despite the plentiful evidence for it? Why do people find the idea of evolution hard to understand or accept? Why do some people think of evolution as a nihilistic idea that deprives life from meaning? These are the central questions of my new book Understanding Evolution. Ask me anything about:
I'll be here, from 12 noon to 2pm ET (17-19 UT), Ask Me Anything! Username: /u/Kostas_Kampourakis [link] [comments]  |
| If the human brain doesn't have pain receptors why do people get headaches? Posted: 19 Nov 2020 01:54 AM PST |
| Posted: 18 Nov 2020 05:50 PM PST So I know that the fallopian tubes are lined with cilia to help guide the egg into the uterus and it is my understanding that the fallopian tubes are not actually connected to the ovaries and therefore are open to the interstitial space of the body cavity. This has me wondering if the cilia ever bring in random stuff that might be floating around in the body cavity. If it does, how does the uterus cope and not become infected or injured? [link] [comments]  |
| How much do we know about mRNA vaccines? Posted: 19 Nov 2020 07:16 AM PST How much study has there been around mRNA vaccines? How much worry should we have around them? Just to note, I am in no way anti-vax, I just worry about the novel approach of making the human cells generate proteins via DNA manipulation. Please tell me I'm just being paranoid :) (this is coming from someone who has been on various biologics such as Remicade, Humira, and Entyvio) [link] [comments]  |
| Posted: 18 Nov 2020 10:05 PM PST |
| Posted: 18 Nov 2020 12:02 PM PST EDIT: Thanks to u/iayork, I know now I was imprecisely and verbosely dancing around the concept of sterilizing immunity (in contrast to -- from what I understand of the term via Google -- infection-permissive immunity). I asked this question on a question thread in r/COVID19, but I'm curious about viruses and immunity in general, not just COVID. To shed more light on my question, I have a friend who tested positive for COVID antibodies over the summer (after presumably having an asymptomatic case at some point), had many negative tests over the past several months, and then tested positive for COVID on a PCR test again a couple weeks ago. Both times she was asymptomatic. Could this mean that the immune system is doing exactly what it's supposed to do — i.e. the second time she got exposed, her body recognized the virus, fought it off, and she was never actually infectious? That is, I assume "immunity" doesn't actually prevent the virus from entering your body, but rather your immune system recognizes it and knows how to properly respond. So can you have a true positive in this case because the virus has managed to make it into your system again and PCR tests are overly sensitive and will pick up on even a miniscule trace of virus? To get ahead of an answer I've already gotten: she has had many negative PCR tests between the positive antibody test and this most recent PCR test (she's someone who tests periodically as a precaution) so it seems less likely to me that this is one of those cases of someone consistently testing positive for months due to viral remnants. That all said: COVID aside, how does this work in a broad sense? We don't test as frequently or with such high sensitivity for other viruses, but if we did, could an immune or vaccinated person theoretically have a virus "in their system" at a level high enough to test positive for it on a molecular test, but not be symptomatic or infectious because their body already knows how to fight it? [Edit: formatting] [link] [comments]  |
| Posted: 18 Nov 2020 06:36 PM PST |
| What are the actual mortality rates for covid by comorbidity? Posted: 18 Nov 2020 08:35 PM PST That is to say, the mortality rate in patients with diabetes as opposed to hypertension, for example. [link] [comments]  |
| Is there an electron - neutron bound state? Posted: 18 Nov 2020 06:39 PM PST An electron and a neutron shouldn't interact with each other much, but they both have magnetic dipole moments which could cause an attraction. Also, if the electron induces a very small electric dipole on the neutron then the two particles should be attracted. There should also be a minute attraction due to gravity. In short it seems like there are a few effects that could cause very slight attraction, without anything causing repulsion, so I'd expect the particles could have a very weakly bound state. [link] [comments]  |
| What happens to serotonin after it binds with postsynaptic proteins? Posted: 18 Nov 2020 09:45 PM PST When serotonin passes the synaptic cleft and binds with postsynaptic proteins, what happens to them after that? [link] [comments]  |
| Posted: 18 Nov 2020 08:08 AM PST Imagine a length of monofilament fishing line (which for these purposes we'll assume is uniform and undamaged in any way) that is suspended vertically. Now let's assume that it's a reallllllly long length, long enough that the total weight of the length surpasses the line's rated breaking strength. This would be hundreds of thousands of feet in practice, I don't know if it factors into the question or not. Say the line is 100,000 feet long and it is expected to break with 10 lbs of (force? load? tension?), and the whole 100,000 foot length weighs 20 lbs. My primary question is: will the line break? More generally what I'm wondering is how the 10 lbs is distributed along the line. Will the line break at the point where the weight of the line below exceeds 10 pounds? Will it break at a random spot? Will it not break at all because the 20 lbs is distributed evenly along the entire length of the line? Is the answer different if there's a significant weight tied to the end of the line, say a 1 lbs weight or a 9 lbs weight or a 11 lbs weight. I don't even know the vocabulary to go search for info on this. By the way, this is not a practical problem, this is just idle curiosity. [link] [comments]  |
| Is it possible for a species to evolve to be symbiotic with a virus? Posted: 18 Nov 2020 10:29 PM PST Like a particular virus is beneficial to the species so it just continues to spread and evolve until its pretty much a part of the species (in the DNA?) or would a virus eventually die out even if it's beneficial? [link] [comments]  |
| How does the product Zanfel work on Poison Ivy Exposure? Posted: 18 Nov 2020 06:57 PM PST The Zanfel product site says the following but doesn't really explain how it does this
I'd love to understand how this cream works. [link] [comments]  |
| Does the success of the Covid-19 vaccine mean that they will stop the trials? Posted: 18 Nov 2020 06:43 PM PST |
| Why are noodles made from some starches clear, while noodles made from other starches opaque? Posted: 18 Nov 2020 07:39 AM PST |
| Posted: 18 Nov 2020 06:37 AM PST This occurred to me seeing a picture of the Dragon Capsule's top hatch opening to dock with the ISS. It looks like the tip of the cone rotates out of the way, and it's on the exterior of the craft so I'm not sure how that motion would be sealed against vacuum. Or do they design the components to work without lubrication? [link] [comments]  |
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