Consider one of the radiation - reducing protective cell phone covers that can now be purchased and may reduce radiation exposure by up to 90 %. (mindbodygreen.com)
Immune cells — B cells, T cells, monocytes, and macrophages — are key protective cells in blood vessels. (lji.org)
Since the plant responds to injury by surrounding the wound with protective cells that also happen to be highly nutritious, the larvae trick their host into providing them with a choice meal. (discovermagazine.com)