I am not entirely sure, but i think it would be the respiratory system because plants produce oxygen after taking in carbon dioxide, and that is similar to the human respiratory system. I am not completely sure though. hope this helps!
Infected cells create and release small proteins known as interferons, which help the immune system fight viruses. Interferons stop viruses from replicating by interfering with their ability to multiply within infected cells.
Persons with O blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibody anti-b in their plasma.
ABO blood grouping was discovered by Austrian scientist Landsteiner. It consist of four blood groups- A, B, AB, & O.
Red blood cells have certain extension of the proteins that are called antigen. Two types of antigens are there antigen a & b. The RBCs which have a particular antigen will not have the antibody against the same.
Blood Group A has antigen A and antibody B. Blood group B has antigen B and antibody A. Blood group AB has both antigen and no antibodies while blood group O has no antigen and antibody A & B.
To learn more about red blood cells here
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Answer:
bacteria, protists, and yeast.
Explanation:
