This isnt realy a question please be more spefic
In the USA is is the law. Medical issues are private matters between a healthcare provider and patient. If a person's private information was to "get out" it might affect their ability to get a job or they might face other predjudices Also the private insurance numbers could be used to steal someone's identity.
Answer:
The body reject the transfusion and end up poisoning the receiver
I think it is natural selection. genetic variation also could be a factor for physical variation over the years.
1.) Nose
2.) Mouth
3.) Larynx
4.) Lung
5.) Right Bronchus
6.) Diaphragm
7.) Pharynx
8.) Trachea
9.) Left Bronchus
10.) Bronchiole
11.) Alveoli
12.) Throat
