Glossary of "Life (9th ed.)" by Sadava et al. (2011)
- One of the two major classes of white blood cells; includes T cells, B cells, and other cell types important in the immune system.
- Sadava, D., Hillis, D. M., Heller, H. C. & Berenbaum, M. R. 2011. Life: The Science of Biology, 9th ed. -xliv + 1266 pp. Sinauer Associates, Inc., Sunderland.