Prelude to the First Battle of Bull Run (Manassas). By July 1861, two months after Confederate troops opened fire on Fort Sumter to begin the Civil War, the northern press and public were eager for the Union Army to make an advance on Richmond ahead of the planned meeting of the Confederate Congress there on July 20.mpact of Bull Run (Manassas). Despite their victory, Confederate troops were far too disorganized to press their advantage and pursue the retreating Yankees, who reached Washington by July 22.
Bone Marrow. The bone marrow gives rise to all of the cells engaged in the defense mechanisms of the body (with minor exceptions). In babies it is found in all the bones, but moving through puberty it is replaced in the long bones by fat so that in adults it is found only in the central bones, such as the ischium.The key cells in bone marrow are the hematopoietic stem cells, which give rise to the lymphoid stem cells and the myeloid stem cells.But we put off red blood cells until the spring.). 1  Lymphocytes. 2  Lymphocytes are the only cells capable of adaptively (specifically) making the molecules (antibodies and T cell receptors) that specifically recognize antigens, which are molecules foreign to the body.
Stem cells (immature blood cells) are removed from the blood or bone marrow of a donor and are frozen for storage. After the chemotherapy is completed, the stored stem cells are thawed and given back to the patient through an infusion. blood stem cell may become a lymphoid stem cell or a myeloid stem cell. A lymphoid stem cell becomes a white blood cell. A myeloid stem cell becomes one of three types of mature blood cells: 1  Red blood cells that carry oxygen and other substances to all tissues of the body.