https://padlet.com/90302971/3jvza22rgzof Biology en-us 2018-05-21 13:11:18 UTC 2025-10-22 10:38:15 UTC hello@padlet.com 90302971 https://padlet.com/90302971/3jvza22rgzof/wish/262347369 The immune system is body's system of fighting off different pathogens]]> 2018-05-21 13:15:40 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262347369 90302850 https://padlet.com/90302971/3jvza22rgzof/wish/262347583 First line of defense: physical and chemical barriers that defend the body from infection. 
second line defense: nonspecific resistance that destroys invaders in a generalized way without targeting individuals.]]> 2018-05-21 13:16:16 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262347583 90304102 https://padlet.com/90302971/3jvza22rgzof/wish/262347718 An immune response to a pathogen produces memory cells, thus resulting in the pathogen being unable to cause a serious infection]]> 2018-05-21 13:16:41 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262347718 90304102 https://padlet.com/90302971/3jvza22rgzof/wish/262347828 Antibodies are transferred to a person who has never been exposed to a pathogen. It lasts only as long as the antibodies survive in body fluids.]]> 2018-05-21 13:16:56 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262347828 90302971 https://padlet.com/90302971/3jvza22rgzof/wish/262348748 Fight infections by making antibodies. The antibody fits with one specific antigen.]]> 2018-05-21 13:19:24 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262348748 90302850 https://padlet.com/90302971/3jvza22rgzof/wish/262348754 a long-lived lymphocyte capable of responding to a particular antigen on its reintroduction, long after the exposure that prompted its production.]]> 2018-05-21 13:19:25 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262348754 90302971 https://padlet.com/90302971/3jvza22rgzof/wish/262349137 Killer vs Helper. Helper activates the B cells
Killer comes in contact with infected cells as kills them.]]> 2018-05-21 13:20:25 UTC https://padlet.com/90302971/3jvza22rgzof/wish/262349137