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Araldite epoxy resin is commonly used as an embedding medium for electron microscopy. [9] ... This page was last edited on 19 November 2024, at 07:52 (UTC).
BTW, that's also how it got its name; ARaLdite —Preceding unsigned comment added by 213.40.250.209 09:22, 16 August 2009 (UTC) The History section is extremely confusing at present. Most of the article documents the two part epoxy resin adhesive which is what most people understand by the term 'Araldite'.
Facebook rolls out keyword search for all posts, part of Facebook Graph Search, to all US English users on desktop and using iPhones. [458] [459] [460] It is cited as a potential competitor to Yelp and other product recommendation engines [461] and also as a potential way to surface old, embarrassing posts by people. [462] 2014: December 11 ...
For sexually reproducing planaria: "the lifespan of individual planarian can be as long as 3 years, likely due to the ability of neoblasts to constantly replace aging cells". Whereas for asexually reproducing planaria: "individual animals in clonal lines of some planarian species replicating by fission have been maintained for over 15 years".
On the other hand, while acetylcholine does not contain a cyclic system, it does contain a quaternary ammonium ion. Because of this shared moiety, curare alkaloids can bind readily to the active site of receptors for acetylcholine (ACh) at the neuromuscular junction, blocking nerve impulses from being sent to the skeletal muscles, effectively ...
Ileum, caecum and colon of rabbit, showing Appendix vermiformis on fully functional caecum The human vermiform appendix on the vestigial caecum. The appendix was once believed to be a vestige of a redundant organ that in ancestral species had digestive functions, much as it still does in extant species in which intestinal flora hydrolyze cellulose and similar indigestible plant materials. [10]
The treatment of human lice is the removal of head lice parasites from human hair. It has been debated and studied for centuries. It has been debated and studied for centuries. However, the number of cases of human louse infestations (or pediculosis ) has increased worldwide since the mid-1960s, reaching hundreds of millions annually. [ 1 ]
Using the percent distance from human–chimpanzee last common ancestor, Denisovans/Neanderthals split from modern humans about 804,000 years ago, and from each other 640,000 years ago. [25] Using a mutation rate of 1 × 10 −9 or 0.5 × 10 −9 per base pair (bp) per year, the Neanderthal/Denisovan split occurred around either 236–190,000 ...