The spleen is a center of activity of the mononuclear phagocyte system and can be considered analogous to a large lymph node, as its absence causes a predisposition to certain infections.he spleen is a center of activity of the mononuclear phagocyte system and can be considered analogous to a large lymph node, as its absence causes a predisposition to certain infections.
The Celtic knot symbol, is also referred to as the mystic knot, or the endless knot. The more esoteric or spiritual meaning of this symbol eludes to beginnings and endings.In viewing these beautiful knots, we cannot see a beginning or and end, and therefore we are reminded of the timeless nature of our spirit.he Celtic knot symbol, is also referred to as the mystic knot, or the endless knot. The more esoteric or spiritual meaning of this symbol eludes to beginnings and endings.
Here is a quick guide to the meaning behind some of the most popular Irish/Celtic symbols commonly used in jewelry that evokes the essence of Ireland: the Trinity knot, the Celtic knot, the Celtic spiral, St. Brigidâs Cross, the Celtic cross, the Tree of Life, and the Claddagh.rinity Knot. The Trinity Knot (also known as the triquetra) is an ancient Celtic symbol comprised of one interconnected line with three distinct ends. Once having pagan meaning, the symbol was adopted by Christians as a good illustration of the doctrine of the Holy Trinity.