biology - Vaccines 0.0 / 5 ? BiologyMedicine and drugsGCSEEdexcel Created by: sianahaynesCreated on: 09-05-14 09:17 Who was Edward Jenner? He was a scientist studied how milk girls didnt get small pox, so he injected his servants son with a mild variation of the disease cowpox 1 of 7 What was Edward Jenners hypothesis? If you have come into contact with cowpox you wont suffer small pox 2 of 7 Whats the first step of immunisation? A vaccine containing a dead or weakened pathogen is injected into the boy (it has antigens on the surface). 3 of 7 Whats the second step of immunisation? A type of white blood cell, called a lymphocyte, with an antibody that perfectly fits the antigen is activated. 4 of 7 Whats the third step of immunisation? The lymphocyte divides over and over again to produce clones of identical lymphocytes. 5 of 7 What is the forth step of immunisation? Some lymphocytes secrete large amounts of antibodies. the antibodies stick to the antigens and destroy the pathogen. 6 of 7 What is the last step of immunisation? Some of the lymphocytes remain in the blood as memory lymphocytes, ready to respond immediatly if the same antigen ever turns up again. 7 of 7
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