Chapter 21 of Writing Today Using Basic Rhetorical Patterns Introduction Definition Classification Comparison and Contrast Rhetorical patterns are useful for writers to arrange ideas into sections and paragraphs (425).
Bone marrow stromal cells. A general term for non-blood cells in the bone marrow, such as fibroblasts, adipocytes (fat cells) and bone- and cartilage-forming cells that provide support for blood cells.
Overview. White blood cells (WBCs), also called leukocytes, are an important part of the immune system. These cells help fight infections by attacking bacteria, viruses, and germs that invade the body. White blood cells originate in the bone marrow, but circulate throughout the bloodstream.