OpenStax
Open Stax: Anatomy & Physiology: The Immune Response Against Pathogens
Students learn about the development of immunological competence, and find out about the human body's immune response.
Biology Pages
Kimball's Biology Pages: B Cells and T Cells
A very strong overview of cell mediated immunity and the roles of the different cells within the system.
CK-12 Foundation
Ck 12: Biology: Cell Mediated Immune Response
[Free Registration/Login may be required to access all resource tools.] Describes the roles of T cells in a cell-mediated immune response.
CK-12 Foundation
Ck 12: Life Science: B and T Cell Response
[Free Registration/Login may be required to access all resource tools.] Some defenses, like your skin and mucous membranes, are not designed to ward off a specific pathogen. They are just general defenders against disease. Your body also...
Biology Pages
Kimball's Biology Pages: Cd8+ T Cell
A high level discussion of the processes in which the killer T cell is involved. Strong biology background required.
Other
Hon: T Killer Cell
Health on the Net offers this very brief explanation of what these cells do in the immune system.