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.
The Trinity Celtic symbol or the 3 cornered Celtic knot is perhaps the simplest of all the knots that is made by joining three curved lines on three corners. However, by combining this knot with other knotwork patterns, a more complicated design can be formed.This design is also known as the triquetra.he Trinity Celtic symbol or the 3 cornered Celtic knot is perhaps the simplest of all the knots that is made by joining three curved lines on three corners. However, by combining this knot with other knotwork patterns, a more complicated design can be formed.