Photomicrographs of the M. oleifera treatment group showing: A, marked improvement in lymph node structure with cortex (C), paracortex (PC), and medulla (M) (×100); B, cortical lymphoid follicle (LF) with germinal center (GC) (×400); C, medulla with medullary cords (MC) and medullary sinuses (MS) (×400); D, marked improvement in spleen white pulp (WP) and red pulp (RP) structure (×100); E, WP with LF, central arteriole (CA), periarteriolar lymphatic sheath (PALS), GC, and marginal zone (MZ) (×400); F, RP with splenic cords (SC) and venous sinuses (VS) (hematoxylin and eosin, ×400); G, almost normal shape of thin, delicate elastic fibers in the lymph node (arrow) (Orcein, ×400); H, nearly normal shape of thin, elastic fibers (arrow) in the spleen (Orcein, ×400); I, almost normal mast cell size and numbers (arrows) in the pericapsular connective tissue of the lymph node (toluidine blue, ×400).