Many cells of this system are transported through the (*) lymph.
This system includes a protein whose great variety is guaranteed by V(D)J recombination. That protein is synthesized by cells of this system that have receptors IL-7 and CD19. This system includes mast cells and eosinophils (ee-oh-SIN-uh-filz). Many cells of this system are transported through the (*) lymph. This system's cells include macrophages (MAK-row-fay-jez) and several types of B cells. For 10 points, name this system that contains white blood cells.
This system includes a protein whose great variety is guaranteed by V(D)J recombination.
{immune} system [or equivalents]