 The latter view was bolstered during 2004 and 2005 when an international team of 39 specialists undertook the most thorough scientific examination of the "Mona Lisa" yet undertaken.Beneath the frame (the current one was fitted to the "Mona Lisa" in 2004) there was discovered a "reserve" around all four edges of the panel.A reserve is an area of bare wood surrounding the gessoed and painted portion of the panel.