While America was undergoing an era of good feeling there were many problems lying under the surface. These social ills were attacked many social reformers. This reform movement was led by people who believed that America could do anything if she put her mind to it. One writer called America, The Israel of our time.. Major reform movements existed in the following areas:
mononuclear. adj. 1. (Physiology) (of a cell) having only one nucleus.
The mononuclear phagocyte system constitutes macrophage cells spread throughout the human body. The macrophages are long-lived cells that provide a major defense system against hostile elements through phagocytosis and subsequent intracellular destruction of the particle or cell.