Pet Safe Ant Killer Research Paper - recommend you
A ribosome is a biological machine. According to Richard Feynman , it was his former graduate student and collaborator Albert Hibbs who originally suggested to him circa the idea of a medical use for Feynman's theoretical micro-machines see biological machine. Hibbs suggested that certain repair machines might one day be reduced in size to the point that it would, in theory, be possible to as Feynman put it " swallow the surgeon ". These nano-robot swarms, both those unable to replicate as in utility fog and those able to replicate unconstrained in the natural environment as in grey goo and synthetic biology , are found in many science fiction stories, such as the Borg nano-probes in Star Trek and The Outer Limits episode " The New Breed ". Some proponents of nano-robotics, in reaction to the grey goo scenarios that they earlier helped to propagate, hold the view that nano-robots able to replicate outside of a restricted factory environment do not form a necessary part of a purported productive nanotechnology, and that the process of self-replication, were it ever to be developed, could be made inherently safe. They further assert that their current plans for developing and using molecular manufacturing do not in fact include free-foraging replicators. Legal and ethical implications[ edit ] Open technology[ edit ] A document with a proposal on nanobiotech development using open design technology methods, as in open-source hardware and open-source software , has been addressed to the United Nations General Assembly.Pet Safe Ant Killer Research Paper - the
Release phase[ edit ] The final stage in the life cycle of a virus is the release of completed viruses from the host cell, and this step has also been targeted by antiviral drug developers. Two drugs named zanamivir Relenza and oseltamivir Tamiflu that have been recently introduced to treat influenza prevent the release of viral particles by blocking a molecule named neuraminidase that is found on the surface of flu viruses, and also seems to be constant across a wide range of flu strains. Immune system stimulation[ edit ] Main article: immunostimulant Rather than attacking viruses directly, a second category of tactics for fighting viruses involves encouraging the body's immune system to attack them. Some antivirals of this sort do not focus on a specific pathogen, instead stimulating the immune system to attack a range of pathogens. One of the best-known of this class of drugs are interferons , which inhibit viral synthesis in infected cells. A more specific approach is to synthesize antibodies , protein molecules that can bind to a pathogen and mark it for attack by other elements of the immune system. Once researchers identify a particular target on the pathogen, they can synthesize quantities of identical "monoclonal" antibodies to link up that target. A monoclonal drug is now being sold to help fight respiratory syncytial virus in babies, [27] and antibodies purified from infected individuals are also used as a treatment for hepatitis B. In cases of antiviral resistance, drugs have either diminished or no effectiveness against their target virus. Pet Safe Ant Killer Research PaperMain article: Hare Hares are precocialborn relatively mature and mobile with hair and good vision, Pet Safe Ant Killer Research Paper rabbits are altricialborn hairless and blind, and requiring closer care. Killeg and cottontail rabbits live a relatively solitary life in a simple nest above the ground, while most rabbits live in social groups in burrows or warrens.
Hares are generally larger than rabbits, with ears that are more elongated, and with hind legs that are larger and longer. Hares have not been domesticatedwhile descendants of the European rabbit are commonly bred as livestock and kept as pets. Domestication Main article: Domestic rabbit Rabbits have long been domesticated. Beginning in the Middle Agesthe European rabbit has been widely kept as livestockstarting in ancient Rome. Selective breeding has generated a wide Kille of rabbit breedsof which many since the early 19th century are also kept as pets. Some strains of rabbit have been bred specifically as research subjects.
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As livestock, rabbits are bred for their meat and fur. The earliest breeds were important sources of meat, and so became larger than wild rabbits, but domestic rabbits in modern times range in size from dwarf to giant. Rabbit fur, prized for its softness, can be found in a broad range of coat colors and patterns, as well as lengths. The Angora rabbit source, for example, was developed for its long, silky fur, which is often hand-spun into yarn.
Other domestic rabbit breeds have been developed primarily for the commercial fur tradeincluding the Rexwhich has a short plush coat.
Biology Development of the rabbit heart wax models Because the rabbit's epiglottis is engaged over the soft palate except when swallowing, the rabbit is an obligate nasal breather. Rabbits have two sets of incisor teeth, one behind the other.
This way they can be distinguished from rodentswith which they are often confused. However, recent DNA analysis and the discovery of a common ancestor has supported the view that they do share a common lineage, Pwt thus rabbits and rodents are now often referred to together as members of the superorder Glires.
Though plantigrade at rest, rabbits are on their toes while running, assuming a more digitigrade form. Rabbits use their strong claws for digging and along with their teeth for defense. Each hind foot has four toes but no dewclaw. The soft coat of the wild here is agouti in coloration or, rarely, melanisticwhich aids in camouflage.
The tail of the rabbit with the exception of the cottontail species is dark on top and white below. Cottontails have white on the top of their tails.
It displays all of the skeletal articulations of rabbit's hind limbs.]
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