describe the steps in cell mediated immunity.
Since this is not my area of expertise, I searched Google under the key words "'cell mediated immunity'" to get these possible sources:
http://en.wikipedia.org/wiki/Cell-mediated_immunity
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/CMI.html
http://uhaweb.hartford.edu/bugl/immune.htm
http://www.jdaross.cwc.net/cellmediated_immunity.htm
http://pathmicro.med.sc.edu/bowers/cell-mediated.htm
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/. It can also help with your unanswered posts.
I hope this helps. Thanks for asking.