New Church men are familiar with the correspondence of the human body to the Grand Man of Heaven. (HH 59 & 63) We know the correspondences of various organs, e.g., the lungs, heart, eyes, spleen, etc., as well as their functions in the natural world. We also know of certain animals and plants that have correspondences. However, since the time of Swedenborg the biological sciences have made many discoveries. Many biochemical pathways have been elucidated to explain the chemical processes of not only organs, but cells, cellular particles, and even molecules within cellular particles.