(Thanks to F.B. for the inspiration). Sigh… people don’t seem to learn. It’s been almost 22 years (yikes!) since a distinguished group of scientists published a letter in Cell calling for a responsible use of the word “homology”. If you were born when that letter was published, then in the US you can already drink […]
Maintaining a water balance is essential to life. Cells must regulate their water content carefully and within a very narrow margin. Too much water intake, and the cell bursts like a water balloon; too much water outflow, and it shrivels like a raisin. The cell itself is contained in a waterproof membrane. But there are […]
In the Hatena story about symbiosis, I posted the following picture drawn by Ernst Haeckel: Beautiful! In this day and age of imaging, high resolution photography, and molecular graphics, we forget that scientific drawing was a skill as necessary to life scientists as microscopic imaging, or molecular graphics is today. Indeed, biology was very much […]
The story of a predator that, upon eating a certain food, suddenly becomes a peaceful plant. Sort of. Free-living versus symbiotic A working definition for symbiosis is two or more species that live and interact. Mutualism means that each derives a certain benefit from the other, or at most causing no harm to each other. […]
Mass Extinctions and Genomics The geological signs for mass extinctions are very distinct: the photo shows the boundary of the Cretaceous-Tertiary KT extinction that happened ~65 million years ago (Mya), and killed some 70% of the species on Earth, most famously the dinosaurs. This was the last mass extinction, and its effects on Earth’s life […]
Intelligent Systems in Molecular Biology (ISMB) is a large international gathering of computational biologists, mostly from the bioinformatics side: genomics, structural bioinformatics, computational genomics, etc. This year there is a friendfeed room for microblogging ISMB 2009. So if you are not in Stockholm, or also if you are, look it up. Most of the microbloggers […]
Since the Swine Influenza Media and Blogging Pandemic has died for now, I think I can finally write about ‘flu myself. A quick aside: until I was about 15, I thought that the word Influenza came from the Arabic “Inf-Il-enza” meaning “goat’s nose”, which it is a bit runny, like a dog’s, or like someone […]
From Annals of Diagnostic Pathology. This is what happens when you bring a pathologist to a fast food joint. Hat tip to Laura for pointing this out. Here were my initial thoughts about these findings. “Bleaaachhhh!” (I’m very verbal when reading scientific papers). Well, it looks bad.. but. But. Cooked ground beef can have up […]
Harvard University has removed from YouTube the video I embedded in my Leonardo Da Vinci and the F0-F1 ATPase post, due to copyright concerns. It is a pity. I believe the main sufferer from this step is the lab that actually created this video, and now has one outlet less to publicize its work. One […]
A short follow up to the previous post on latherin. A quick reminder: latherin is a protein that exists in the horse’s sweat and saliva. In the sweat, latherin acts like a detergent, wetting the horse’s coat to allow for better water evaporation and hence better cooling. In the saliva, it helps wet the horse’s […]
Dennis Mitchell: “Margaret, you are all sweaty” Margaret Wade: “Dennis, girls don’t sweat. Horses sweat, boys perspire and girls glow” Dennis Mitchell: “Margaret, you are glowing like a horse”. — Dennis the Menace / Hank Ketcham Horses and humans sweat but most other mammals do not. Sweating lowers the body’s surface temperature by evaporating […]
First, a non-bioinformatic one liner, which is very relevant to most of us working on 3 different machines simultaneously, not including the 80 in our cluster. ssh-ing and giving your password each time is painful, and makes it almost impossible to do scripted file transfers, like backups. A good solution is shared key ssh in […]
Offspring #2 (O2) and I spent last weekend visiting the Da Vinci Experience exhibit at San Diego’s Air & Space Museum. The exhibit is engineer’s heaven: large wood models based on and inspired by LDV’s drawings. Gears, crankshafts, pulleys. O2 was interested in the military stuff: catapults, the tank , a mobile bridge. I did […]
