Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Viriods and Prions
Viroids
In 1971, T.O.Diener reported that the spinde tuber disease of potato causing gnarling and cracking of the tuber, is caused by multiplication of a pathogen much smaller than viruses and present in tuber cells themselves, This pathogen found to be a free short and circular RNA strand of about 300nucleotides. Diener named it viroid. It was found that viroids are infectious because, after multiplying in a plant cell, these disperse in the tissue and invade new cells. About a dozen plant diseases have since been shown to be caused by viroids.it is also possible that the causative agents of some more plant and animals diseases turn out to be viroides.
Prions
While searching for the cause of a mental disease kuru widespread in a tribe of New Guinea, D,C Gajdusek(1968) discovered that the disease is caused by a slow virus infection. He shared the 1976 Nobel Prize this work. Later he suspected that other neurological disorders. Like mad cow disease in cows and human dementia and Parkinson disease might also be of this category, Prisoner (1985) speculated that Creulzfeldt Jacob disease extremely minute (4-6 nm in diameter ) protein particles which are coded by the genome of certain brain cells, and act as infectious pathogens, These particles have been named prions.
Q. What are the organs that are part of the male genital system? The organs that comprise the male genital system are the testicles, the vas deferens, the seminal vesicles, the
Why are the tropical forests also known as stratified forests? In tropical forests tall trees of various species have their crowns forming a superior layer under which diverse
Morphological changes Regressive changes -These changes include the gradual reduction and ultimate disappearance of all those larval structures or organs that become redundan
What is Severity and Extent of Lesion in coronaw artery disease? Apart from the high prevalence, the other disturbing features of CAD in South Asians are the severity and exten
Define Transport Proteins in Plasma? Transport proteins, embedded in lipid membranes, make easy the import of nutrients into cells or the release of toxic products into the sur
Q. Explain What is Probing Depth? This parameter is applicable to one stage implants when they are evaluated prior to prosthetic phase and used to evaluate the health of the im
Two true-breeding pea plants were crossed. One parent is round, terminal, and violet, constricted, while the other expresses the respective contrasting phenotypes of wrinkled, axia
Define effect on Human chorionic gonadotropin in Pregnancy? Human chorionic gonadotropin (HCG) begins to increase immediately on implantation of the ovum and reaches a peak at
Q. Fluids requirement during congestive cardiac failure? Fluids: Fluid intake should be monitored in accordance with urine output and severity of oedema. Fluid restriction is
Model Analysis The study casts of the patient provide a wealth of information and insight into the treatment decisions and planning. For partially edentulous patients it is cri
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd