Tree of Life is considered to be the microcosm of the whole spiritual universe by the Kabbalists, thus representing the human body, called "Adam Kadmon." It emphasizes the genitalia of a human body as the source of energy and divine connection, explaining part the sexual obsessions of Kabbalah. -- Original Title: "adam kadmon"
10 Sephirot - Baal Shem practice and Kabbalah. The "Name" referred to in "Master of the Name" is the most holy Four-Letter Name of God or Tetragrammaton. In Jewish tradition, this Name was pronounced only by the High Priest on Yom Kippur. In some accounts, a Baal Shem was believed to have re-discovered the true pronunciation, perhaps during deep meditation, and could use it in magical ways to work miracles.
The Cadeusus / The Tree of Life. According to Walter Friedlander, in The Golden Wand of Medicine: A History of the Caduceus Symbol in Medicine, this connection can be traced back to 1902, when the U.S. Army adopted the caduceus as the insignia of its Medical Corps, which had previously used the cross.