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When you get sick, you generally don't contract enough bacteria at once for them to succeed in battling your immune system, right?
Everybody mixed their saliva with the saliva of 3 other people, so at the end everybody had a tube with the saliva of 4 different people in it.
What would be an optical explanation for possibility/impossibility?
Plants produce lots of compounds that inhibit (kill or irritate) microorganisms and insects. They have defenses against plant viruses and infections.
Imagine humans were to colonize a distant planet and it was a single one-way trip.
A miRNA regulates its target mRNA by degradation. Let's assume the target mRNA has an arbitrary expression level of 1.
You have isolated C57BL6 embryonic stem cells and have tried a new culture condition to keep them pluripotent. To test the success of your protocol, you are injecting cells into a C57BL6 blast cyst.
From what I have read and understood telomeres cap off how many times a cell can divide before it can no longer divide and that is what causes aging.
Take a human for instance; make a line from the top of our head right down the middle. However, internally it is not the same. Our organs excluding the kidneys, lungs, reproductive organs, etc are n
The HIV antigens that are used in the oral rapid tests, are they infectious?
I have seen some people shivering in the room temperature of 18°C while others of similar body structure do not feel that much amount of cold.
In training for scuba diving, they tell you that when you're bellow 100 ft or so you have to watch out for changes in mental state that resemble drunkenness.
I've read that female mules can sometimes have offspring, but that male mules are incapable of doing so.
It is a common observation that food is tasteless when we have a cold. Why is that so? Please explain.
If I understand it correctly, levels of serotonin in the brain can indicate if a person is happy.
Warm blooded animals like us keep their temperature constant irrespective of their surroundings. But how do they do that? Energy should be supplied from the inside.
Is there a way to generally characterize how species "regrew" after the various mass extinction events happening periodically from 450 Ma to 65 Ma.
These forks involve opening up a section of double-stranded DNA, and each strand becoming a double strand in a newly synthesised piece of DNA. At some point, before any single fork has become two ne
I noticed that if I try to imagine a clear blue daytime sky contrasted with a clear night sky and ask myself which of the two appears closer, my intuition says the daytime sky appears closer.
It seems unlikely that an ovoviparous ancestor of mammals long ago could have had a viviparous offspring in a sharp one-generation dividing line
When it doesn't, it alarms the immune system. But do T-cells express MHC molecules ? If so, how are they using it? If not, what happens when a virus infects T-cells? (Yes, I am confused about HIV infe
When emergency personnel arrive on the scene, they find him weak but awake. He complains of muscle pain in his limbs and dizziness.
I am reading conflicting things online, such as Cine-MRI uses ECG-gating, or that Cine-MRI takes many images of the same position of the heart before stitching together the final result, and it is
What is the immunological function of the molecule found on the T-cells?
When an antiserum is injected to a person to protect oneself from a certain disease, the antibodies in the antiserum come from another organism.