Tag Info

New answers tagged

7

Short answer: The genes that encode eye color do not change, but the pigments in the eye can change due to external factors like diseases of medication. Long answer: Yes, it is possible that the eye color of adults can change, and it can also only happen to one eye. It is then called Heterochromia. There are two possibilities for different colored eyes, ...


0

In Gastrointestinal Tract Location of Escherichia coli O157:H7 in Ruminants (Grauke et al. 2002): in the lower GIT digesta, specifically the cecum, colon It's about O157:H7, but I think the standard act a same.


0

I remember going to a chemistry lecture which mentioned this (the lecture was on blood transfusion in general). The main reasons are: 1) Hemoglobin is toxic to the human body: Hb in RBCs is a tetramer, but in the plasma it breaks into two dimers --> toxicity in the kidneys. Hb needs modification by cross-linking or recombination. Wikipedia states that this ...


4

Is there a visual demonstration I can see of approximately how "packed full of cells" the brain actually is? Yes. You can inject tracers in the CSF (Cerebrospinal fluid) or in the ventricles and monitor them. In this study, the authors have injected a fluorescent tracer in the CSF and used a direct imaging. We used in vivo two-photon imaging to ...


4

Vision deteriorates for both reasons, but I'm not quite sure how to separate the effects of aging from wear and tear. Cataracts are the leading cause of blindness in the world. Ways in which environment (which falls under the category of wear and tear in my book) affects cataract formation: UV light: people living at high altitudes (e.g. Tibet) have ...


2

Short Answer What you're referring to is called Delayed Onset Muscle Soreness (DOMS). We don't really know what causes DOMS, but it's most likely caused by a cascade effect started my muscle injury. Also, we aren't sure if massages (or what type of massages) really help relieve the pain. What is Delayed Onset Muscle Soreness (DOMS)? Delayed onset ...


1

I hope you might edit your question to give examples of such comparative injuries. I'm trying hard to imagine an example of this phenomenon, but I can't. The human body doesn't have a tripwire, or a lower limit of injury under which it will not respond. Normally the body mounts appropriate defenses against all injuries from the very minor, like a paper cut, ...



Top 50 recent answers are included