White+Blood+Cells+-+HB

=Introduction= toc

Oh no! You just have fallen down and have you have an open cut on your arm! Now bacteria will infect your body, luckily the white blood cells are here to save the day! White blood cells are very useful to the human body. They help our body from viruses and bacteria. Just like how in superhero movies the good guys protect the city from the bad guys. When a virus or bacteria come near it the white blood cell will do it’s job by protecting the body by DESTROYING the viruses or bacteria.

=Function of a White Blood Cell=

White blood cells have several characteristics. One of it’s functions are is that it protects your body from viruses, aka Pathogens. Pathogens mean viruses or bad bacteria in the body. The way they stop the viruses are if they come near them. Once they come near them they eat/suck up the viruses so they won’t be able to affect the body. How do white blood cells travel? Well they travel through the bloodstream to move the tissue through different parts of the body. Sort of like when I go to lunch and scan ID with my bar code it RECOGNIZES it and let’s me eat my lunch. But there are many kind of different white blood cells like the b cells or AKA the B lymphocytes which make antibodies chemicals that protect you from certain diseases. They also give you immunity from those disease. But there is one more white blood cell and that white blood cell is T cells. T cells recognize pathogens and tell the difference between each kind. There are also Macrophages, what they do is increase in number surround the viruses and destroy the bad guys White blood cells act like the U.S military in the HQ. They help the soldiers tell them what mission they have or where to go like T cells. In conclusion, white blood cells are very different and have many different functions as well.

**Structure of a White Blood Cell**

White blood cells have many different kind of structures, they help cells, they heal cells. They are very helpful in many different kind of ways. What do they do? Well for starters they are technically living. The way they are living is because they REACT to the surroundings around them. For an example when a virus goes near a white blood cell they would REACT to it by eating/sucking it up. One different kind of structures is an “Receptor Proteins.” What they do is: it recognizes bacteria viruses. Like I said earlier with how it is a living thing. There are also many other different kinds of structures like antibodies and shape changers.They are the same thing but they do different jobs for the white blood cells. But they can also not get away with destroying the bacteria/viruses which you will find out how in the next paragraph In conclusion there are many different kinds of structures for white blood cells and its functions.

=What can Destroy a White Blood Cell (AIDS/HIV)=

White blood cells may be tough but they can be vulnerable? What to you may ask? Well the answer is HIV/AIDS. What HIV/AIDS do is infect the body with a disease. But first you need to know they way they can get in the body. The way they get into the body is by a white blood cell. Even though white blood cells can suck up the virus they sometimes can fail to do that resulting to the body can get affected even the white blood cell. Once the white blood cell is affected it can no longer function which means it cannot protect or heal the cells anymore. Once it is not functioning it will eventually then explode, then the cells are now affected and so is the body. Resulting to HIV/AIDS. But the white blood cells will grow once again but not very quickly. In conclusion the white blood cells are tough but can also be stopped as well.

=Conclusion=

The white blood cells are like an invisible army that protects us within. They know when it’s the right time to attack the viruses. Just like the Receptor Proteins. They recognize which cell/ virus is which. So in conclusion white blood cells are very important to the human body, and should get credit for most of the things it does.

=References=

“Blood.” BrainPOP, www.brainpop.com/health/bodysystems/blood/. Accessed 30 Jan. 2017. Corcoran, Mary K., and Jef Czekaj. The Circulatory Story. Watertown, Charlesbridge, 2010. “White Blood Cell.” Encyclopedia Americana. Scholastic Grolier Online, ea.grolier.com/article?id=0417190-00. Accessed 30 Jan. 2017. To find more about AIDS/HIV visit: http://scienceflix.digital.scholastic.com/popsci_article/4028800/0ta/nbps&queryText=aids&docKey=bmJwcy9wcm9kdWN0LzQwMjg4MDAuaHRtbA**