NK cells destroy body cells as well as tumor cells through lysing.
Histamine is released by body cells in response to tissue injury.
The RAAS (renin-antiotensin-aldosterone system) is a part of a complex feedback circuit which maintains homeostasis of the blood.
Auxin is found in the apical meristem and elongates cells in the coleoptile.
Seeing as the AP exam is 6 weeks away I thought I'd post five random terms. Feel free to post five random terms in a future post (don't comment) titled "Random review" to help the world review...because you know that this community is so darn instrumental in helping us become smart in AP Bio.