Avirusis an ultramicroscopic (20 to 300 nm in diameter), metabolicallyinert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of anRNAorDNAcore, a protein coat, and, in more complex types, a surrounding envelope. Virus, e...
Viruses aren't alive; they can only grow and reproduce inside of the host cells they infect. Bacteria are living organisms. Both viruses and bacteria can get you very sick, but most bacteria are harmless and many are helpful.
and illness causes change. If a person is infected with a virus or bacteria, for example, their odour will be abnormal, and dogs are able to smell that change even if a human can't, because dogs have a much more powerful...
Bluelightexposureisnothingnew.Infact, thesunisthelargestsourceofbluelight.Moreover,bluelightisalsopresentinLEDlight.Butif bluelightisn?tharmful,then whyare weconstantlyrubbingoureyeswhen we?relookingat ourscreens? Theansweriseyestrain(眼疲劳): Morethan60percentofpeopleexperienceeye problemsassociated with d...
Many types of infections can cause adenoiditis. It's common to have a respiratory virus before an acute bout of adenoiditis. Viral infections can make infection with bacteria more likely. The most common infectious bacteria in inflamed adenoids include: ...
What is HIV?HIV (human immunodeficiency virus) is a viral infection that slowly weakens your immune system. The virus kills a type of white blood cell called CD4. A normal CD4 count ranges from 500 to 2,000. You have HIV when your CD4 count ranges from 200 to 500. You have AIDS (...
New studies show that before and for of lung cancer, there is a growth in pathogens in the lung microbiome. Yeasts and various pathogenic bacteria such as E.coli are often present. This can become even worse with cancer treatment. It is rarely true that just one cause is responsible for ...
What is a BK virus infection?A BK virus (BKV) infection is a common viral infection that usually does not cause problems. The BK virus may be spread if you have contact with infected blood or body fluids, such as saliva. It can spread from one person to another during an organ ...
A) A virus B) An archae C) A plant cell D) A bacteria E) They are all examples of eukaryotic cells. What are the differences between eukaryotic and prokaryotic cells? What are some differences between eukaryotic and prokaryotic cells? What is the difference between eukaryotes and prokaryotes...
How do I know if my sore throat is caused by bacteria? You don't unless a doctor has taken a throat swab and sent it away to the lab for culture. But there are a few clues to look for that can help you decide if your sore throat ismore likelyto be caused by a virus or a le...