They are Contagious Biohazards
There were more but they weren't discovered as they were not viral and treatment was unknown and research were not done.
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Answer:
The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.
Information
The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. Nonliving substances such as toxins, chemicals, drugs, and foreign particles (such as a splinter) can also be antigens. The immune system recognizes and destroys, or tries to destroy, substances that contain antigens.
Your body's cells have proteins that are antigens. These include a group of antigens called HLA antigens. Your immune system learns to see these antigens as normal and usually does not react against them.
Answer: 1) During the middle of 18th century Italy was divided into seven states if which Sardinia and Piedmont were under princely states . 2) north under Austria , centre ruled by Pope and south ruled by Spain. 3) the main leaders were Victor Emmanuel ll of Sardinia , chief minister count Cavour Mazzini and Garibaldi .
