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.
Mononuclear phagocyte system. The mononuclear phagocyte system is a part of the immune system that consists of the phagocytic cells located in reticular connective tissue.The cells are primarily monocytes and macrophages, and they accumulate in lymph nodes and the spleen.he mononuclear phagocyte system is part of both humoral and cell-mediated immunity. The mononuclear phagocyte system has an important role in defense against microorganisms, including mycobacteria, fungi, bacteria, protozoa, and viruses.