emu2

White blood cells are a big genre of blood that circulates through our blood stream. A leukocyte is produced so that it could support and take part in the second line of defense in our immune system. There is no main difference between white blood cells and leukocytes because they are basically the same thing. There are many more to it such as lymphocytes and or monocytes.
 * 1. Describe the difference between leukocyte and white blood cells. **

Proteins are an assemblage of molecules that are made from a type of acid (amino acid). It is used in many parts of our immune system, and has a big role in the third line of defense. Antibodies are made up of proteins. It is special since it can let other leukocytes know that there is some kind of danger, or in some cases it can neutralize it on its own.
 * 2. The term proteins are frequently used in the study of immunology. Explain the term/concept proteins. **

The black death virus was extremely deadly, since it killed a third of the population in europe, in a month or less. The virus came from black rats, that were infected and transmitted into human bodies as well. It wasn't that black rats that gave the infection, it was the flea inside of them. Also vaccines and or antibiotics were not invented at that time, which was one main reason it was fatal.
 * 3. Explain why the Black Death virus, which has caused millions of deaths, was deadly using concepts of immunology. **

a) what does it mean - 20% fatality rate? 20% fatality rate means that once someone is infected by H7N9, there is a 20% chance that person might die. Fatality comes from fatal, meaning deadly. For example, some infections such as chickenpox would most likely just fade away in a week or so, but it is doubtful that it could kill you which explains that chickenpox has a low fatality rate if one is infected by it.
 * 4. The recent bird flu virus, H7N9, has a 20% fatality rate if one is infected. **


 * b) How is this virus different from a common flu virus? **

One way to prevent virus is to vaccinate your self. By doing this your immune system protection will boost up and is ready to fight any virus he/she encounters.
 * c) Are there ways to prepare our body immune system against such fatal, deadly virus? **


 * d) The bird flu virus wasn't infectious to humans before; explain why it could become viral and harmful to humans. **
 * e) Right now, the flu is unable to infect a person through human to human transmission; if it can infect through human to human transmissions, what could have changed in the virus? **