Rodent

Animal testing or animal research is the use of animal instead of humans for scientific experimentation. Overall it is estimated that 50 to 100 million animals used worldwide from rats and mice all the way to non-human primates. Sources of laboratory animals vary from country to country, some are bred and raised for the purpose of experimentation why others are caught in the wild or bought from a dealer. Most animal testing are located in universities, and medical school. Animal testing includes…

During the 14th century, around 75 to 200 million people died because of the disease known as the Black Plague. These numbers show that around a third of Europe’s population was completely wiped out. Many terrible changes occurred including the rich and the poor going against each other, blaming one another for causing this horrific disease. The Black Plague was the worst epidemic that has ever been recorded in the world’s history because of the disease’s ability to spread rapidly, the terrible…

Mammals, as in the various rodents depicted in the video Chisellers have adapted to fit the many different environments they reside in. There are about 1,300 different species of rats and mice making them the largest that exists to this day. They are equipped with ever growing cheek teeth that replace what has been ground away. One in such mammal depicted within the video was the Kangaroo Rat. They have a quite interesting form of locomotion where they hop much like a kangaroo. Kangaroo Rats…

The Temperate Deciduous Forest The temperate deciduous forest is located in Canada, Japan, China, Japan, parts of Russia, and the eastern half of United States. Everywhere there in those places were described as beautiful and majestic. When the leaves fall down from the trees down to the soil, the nutrients in the leaves are being absorbed by the soil. The soils of the temperate deciduous forest tend to be very fertile. Also, because of this, the biome has fertile soil and a long, 5-6 month…

a number of vaccines have been tested in rodents and non-human primates, including inactivated virus, DNA vaccines, virus-like particles and vaccines based on recombinant viral vectors 68. Some animal models have been developed to study the pathogenesis of Ebola virus infection and assess the efficacy of various vaccine candidates including mice, guinea pigs and other non-human primates. Rodent models do not always predict vaccine…

control of their environment due to the vast space that belong to them. 5. Some of the challenges of using farm animals and laboratory rodents. Challenges which farmers undergo when working with farm animals, are the fact they are bulky making them hard to handle. Furthermore, there is a high risk of injury when working with them. On the other hand, laboratory rodents are smaller and easier to handle but also have to be maintained very well so that their behaviors do not interfere with the study…

The bubonic plague was allegedly caused by a bacterium called “Yersina pestis”, which was often found on wild rodents in large quantities and densities. At the time, these “wild rodents” were mostly black rats that were found on ships that were used for trade. If a rat was a host to a flea carrying the deadly bacterium, the rat would most likely die within 14 days. In order to survive, the fleas would then turn to human hosts. This is how the plague spread. Once the bacterium was present, the…

States (Mayo Clinic). During the 14th century, this disease was behind the death of one third of Europe’s population (The Editors of Encyclopaedia Britannica). The bubonic plague is primarily a disease of rodents and fleas, and humans only accidentally enter the usual cycle of rodent-flea-rodent (The Editors of Encyclopaedia Britannica). Bubonic plague is a bacterial disease; it has a violent history, and the severe disease can be cured (The Editors of Encyclopaedia Britannica). The bubonic…

How ironic! A chemical we humans use to kill rodents actually keeps us healthy . If you have a heart problem or circulation issues, it is also given for a period of time after certain surgeries. This is a drug that goes by the name Warfrin. It is an anitclotting medication, it keeps the blood thin and free of deadly blood clots so that it will flow smoothly through the circulatory system. In order for the blood to clot after a blood vessel is damaged a process needs to happen. The serine…

The Bubonic Plague was a disease carried by rodents. It was caused by bacteria named Yersinia pestis that was found in the intestines of the fleas on the rodents. The bacteria blocked the intestines of the fleas causing the fleas to starve which made the fleas want to feed often. The fleas would try to clear the blockage by vomiting. When the fleas vomited up the bacteria when they were feeding on someone, that bacteria would get into the bite and that person would become infected with the…