This topic covers the immune system's specific defences that protect the body
from the ... Use your textbook to summarise the
Feb 24, 2012
www.cabrillo.edu/~jtice/HSERV 162/Immune System.pdf
Mar 19, 2012
May 19, 2014
Natural active: Occurs during infection. It is active because lymphocytes are activated by antigens on pathogen's surface. Artificial active: Injecting or taking ...
This article reviews active and passive
Passive = delivery of preformed antibodies, limited, not long term
This lesson will introduce immunity and define what immunity is and what it does.
The lesson will also identify the