In 1897, Ross made a significant breakthrough when he discovered that malaria parasites were transmitted by mosquitoes. He found malaria parasites in the stomach tissue of a mosquito and demonstrated their life cycle in the insect. He was awarded the Nobel Prize in Physiology or Medicine in 1902, becoming the first British Nobel laureate in Medicine.
The baffling intelligence of a single cell… This, long-read deep-dive into how a single e-coli cell uses chemotaxis to find its food is fascinating for those interested in #Biology and human #physiology. TL;DR even simple small cells have an internal bio computer that mimics basic intelligence and adaptability. #CellularBiology#Chemotaxis
Ever wonder how Baleen whales (Blues, Greys, Humpbacks), the largest
and some of the most magnificent animals to ever roam the earth,
produce their highly complex communication sounds and whale songs?
New mechanism of vocalization in a fish species. Danionella is able to produce 140 dB sounds using a nice structure made of cartilages drumming on the swim bladder. This is very different from the typical direct vibration induced by sonic muscles observed in most vocal fish species. Don't miss the nice illustrative videos.
Just like how we think we pass through time, rather than being in all the moments separately; before, now, in the future - time as we perceive it exists because the moments are perceived in sequence.
But like the use of the word "illusion", language is a clumsy tool, and it's hard to lay some things out in words.
Well, also its possible the folks actually thought they meant illusion, in which case you're right and they're silly. Send em to me for reducation.
Italian physiologist, physicist, & mathematician Giovanni Alfonso Borelli died #OTD in 1679.
Trained in mathematics, Borelli made extensive studies of Jupiter's moons, the mechanics of animal locomotion &, in microscopy, of the constituents of blood. He also used microscopy to investigate the stomatal movement of plants, & undertook studies in medicine & geology. He was the first scientist to explain that animal & human bodily movements are caused by muscular contractions.
The 2023 #Nobel Prize for #Physiology or #Medicine has been awarded to Hungarian-born Katalin Karikó and American Drew Weissman for work that enabled the development mRNA COVID-19 vaccines.
Very happy to share our newly published #article "Sex differences in pituitary corticotroph excitability".
It is well known that sex differences exist in stress-related disorders, with women having twice the lifetime rate of depression compared to men and most anxiety disorders.
Corticotroph cells in the pituitary gland are a key player in the generation of hormonal stress responses. However, their contribution to sexually differential responses of the stress axis (which might underlie differences in stress-related disorders) is very poorly understood.
We found sex differences in the electrical activity of these cells, which could be related to differences in their gene expression pattern.
These findings shed light on the cellular mechanisms underlying sex differences in stress responses, contributing to a better understanding of stress-related disorders and potential avenues for diagnosis and treatment.
He was awarded the Nobel Prize in Physiology or Medicine in 1929, with Christiaan Eijkman, "for his discovery of the growth-stimulating vitamins."
He also discovered the amino acid tryptophan (an α-amino acid that is used in the biosynthesis of proteins), in 1901. He was President of the Royal Society from 1930 to 1935. via @Wikipedia
How can one estimate comparisons of human heat loss across different scenarios?
According to, a.o. https://sci-hub.se/https://pubmed.ncbi.nlm.nih.gov/4820331/, one can assume that a swimming person's skin temperature is between T_water and T_water+1degC. This seems to suggest that a swimming person at T_water=T will observe similar heat loss as a nude sweating person at T_wetbulb=T with significant relative wind. (Well, that's kinda reasonable even without that confirmation, and relies on similarly intuitive-but-uncited statement that the temperature of sweat film and skin under it will both be at not more than T_wetbulb+1degC, which is probably reasonable in the nontrivial wind assumption.)
Is there a rule of thumb how (thin) clothing should affect that? (I'm trying to figure out rough comparisons of heat loss between running and swimming.) I'm most curious about rules of thumb for (a) loose thin clothing (which I'd model as reducing wind speed and increasing humidity experienced by the film of sweat, but I can't guess by how much) (b) skintight hydrophilic clothing with high heat conductivity (which I'd model at first approximation as changing nothing from being nude).