Create an account
When an antigen has been encountered before (natural immunity) or a vaccination creates a "memory" for specific antigens (acquired immunity)
Large proteins that will recognize and bind to some specific feature of the invading infectious agent (typically, a distinctive surface protein)
blood-borne chemical messengers, proteins, that are released by cells of the immune system that communicate between different cell types
over activation of the immune system; immune system considers a healthy constituent of your body to actually be something invasive and attacks
Growth of capillaries to aid in growth and provide nutrients
Glucocorticoids stimulate this process
Sequence of repetitive bases at the ends of linear chromosomes that prevent adjacent chromosomes from attaching to each other
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together