<span>Proliferation of lymphocytes occurs immediately after activation, as well as the encounter of antigen. First, these antigen are bound, after which activation begins. Activation immediately leads to proliferation, as well as differentiation. Proliferation is an increase in the number of something, in this case, in the number of lymphocytes, or white blood cells. </span>
Answer: There are a total of 22 bones in the skull. The skull is not only made up of bones but also cartilages and ligaments. The facial skeleton does not include the teeth and the cartilage of the nose. The skull contains foramina or canals scattered throughout the skull bones.
