Blood transfusion

Today I read a passage that was talking about blood transfusion.

After I read the passage, I couldn't wait to share with everybody.

We know blood transfusion is an important role for patient who needs an operation, but we don't know why they use blood transfusion on medicine.

And I know the reasons from the book now.

In the 1665, Dr. Richard Lower carried out the first blood transfusion by managing to keep two dogs alive. He transfused blood from one dog to the other. First he cut the dog's neck and he almost killed them in the process. Then he cut an artery from an ox that he placed in the neck of one dog to connect to the other's. He created the first transfusion connection.

In 1667 Dr. Jean Denys succeeded to transfused blood of a lamb into a human.

Therefore, today doctors use transfusion of blood to save people's lives.