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.
A blood cell, also called a hematocyte, is a cell produced by hematopoiesis and is normally found in blood. In mammals, these fall into three general categories:1  Red blood cells â Erythrocytes. 2  White blood cells â Leukocytes. 3  Platelets â Thrombocytes.hite blood cells are cells of the immune system involved in defending the body against both infectious disease and foreign materials. Five diverse types of leukocytes exist, but they are all produced and derived from multipotent cells in the bone marrow known as a hematopoietic stem cells.