.... to the discovery of prions inside the of the victims brains that were eaten by the tribesmen that when they died, as a sign of respect their brains where eaten and the chain went on and on. The thing that makes prions so special is the fact that they lack the basic elements for reproduction, deoxyribonucleic acid and ribonucleic acid DNA and RNA respectively. This is what has given science a great deal of doubt as this would give the dogma of the beginning of live a radical turn. Prions have been in research for many years with experiments like the one done by Stanley B. Pruiser and his team of scientists at the School of Medicine of the University of C .....

.... end it appears that the theoretical framework within which scientists work is more a matter of convention than anything else. In order to determine whether the claim that scientific theory cannot be proven true or otherwise we must first understand what Duhem means by scientific theory. He introduces two possibilities as to the nature of a physical (which we can equate to 'scientific') theory. The first being that it is an explanation of the reality lying behind a group of experimental laws (those that are empirically determined). The second is that a physical theory is simply an abstract system to classify and summarize a group of laws. Taking the first possib .....

.... with HIV eventually develop symptoms that also may be caused by other, less serious conditions. However, with HIV, these symptoms are prolonged and much more severe. They include enlarged lymph glands, tiredness, fever, loss of appetite and weight, diarrhea, yeast infections, and night sweats. HIV is commonly connected with a "wasting syndrome," which results in substantial weight loss, a general decline in health, and, in some cases, death. The virus also infects the nervous system. There, HIV may cause dementia, which is a condition characterized by sensory, thinking, and/or memory disorders. HIV infection of the brain may cause movement or coordinati .....

.... passed through the town. Towards the end of 1989, my family and I were on vacation in Fort Myers, Florida. We drove from Trenton, New Jersey all the way to Florida where my grandfather lived. It was a long trip to undergo, especially being six years old and knowing that my father never stopped the car. By the time we arrived at Fort Myers, it was a beautiful sunny day. The wind was gusting enough to pull my hair back, and I was admiring the palm trees, coconuts, and lizards near the Gulf of Mexico. The first few days were nice, but little did I know that I would soon be caught in the middle of a twister. I can clearly remember being in the car on a humid .....

.... not for lack of effort. Literally hundreds of causes have been proposed. They include viruses, accidental injury before and after birth, as well as illicit substances. However, only inherited factors are generally accepted as significant causes. Evidence for such factors comes from every day experience: it is common to find families with several affected members. While such clustering'could also be due to shared non-inherited (environmental') factors,more convincing evidence has come from twin studies, as well as studies of ill individuals who were adopted away before the onset of illness. It is fair to say that even such studies do not suggest inherited .....

.... and motor commands in the PNS. Sketch and label the structure of a typical neuron and describe the function of each. * The soma, consists of the cell body of a neuron which further contains the nucleus. * Glial cells interact with neurons and regulate the extracellular environment, protect against pathogens and repair damaged neural tissue. * Axons are-capable of propagating nerve impulses. * Dendrites respond to specific stimuli in the extracellular environment. * Synapse terminals communicate information from the presynaptic cell to the posisynaptic cell. Structural Classification *Anaxonic neurons- have multiple processe .....

.... both having the same colouration and markings. They even act and sound the same, thus ensuring that the widow bird nestlings can grow up among their alien nestmates with no risk of being rejected by their foster parents. MASTERS OF DISGUISE Things aren't always as they seem, and nowhere is this more true than in nature, where dozens of animals (and plants) spend their time masquerading as others. So clever are their disguises that you've probably never known you were being fooled by spiders impersonating ants, squirrels that look like shrews, worms copying sea anemones, and roaches imitating ladybugs. There are even animals that look like themselves, w .....

.... laws on humans we can do on animals to achieve results. has given us many cures and vaccines against polio, diphtheria, mumps, measles, rubella, and the extinction of smallpox. We need that kind of . Another thing does and has done is given us valuable medicines to help asthma, epilepsy, arthritis, ulcers, hypertension, and diabetes. Also without research on animals we never would have been able to get drugs tested and approved for use. Animals help us to teach and practice new surgical techniques to doctors who perform today's delicate cardiac, ear, eye, pulmonary, brain surgeries, and other live saving surgery's. And most people faced with their .....