Interferon's are the answer.
Interferon's are a group of proteins produced by virus infected cells that help other cells resist viral infection. <span />
The O+ blood group is a universal donor and can donate to any other blood group that is rhesus positive.
<h3>What is universal donor?</h3>
A universal donor is a blood group which is able to donate blood to every other blood group. This is possible because of the lack of an antigen which will react with an antibody to form agglutination.
The O+ blood group is a universal donor and can donate to any other blood group that is rhesus positive.
Learn more about blood group:brainly.com/question/17052766
#SPJ1
Examples of skeletons protecting the body are, the rib cage for the heart and lungs, and the pelvis for the nerves in the lower body. Your spinal chord has bone to protect to protect the sensitive nerves inside.
A "b." dam is a barrier that holds back water from a river.
