Medical experts say it's the image of a real human being. Blood chemists say it is human blood from actual wounds. Spectroscopists say there is no evidence of paint binder. X-Ray radiographers say there is no metallic based substances as might be used in paint. Spectroscopists say there is no significant trace of paint, ink, dye, pigment or stain.
Textile experts say there are particles of Egyptian cotton indicating a Mideast origin.
Botanists say the pollen on the Shroud is from Israel and surrounding areas. Microscopists say limestone particles are similar to the hills around Jerusalem. Photographers say the image is a negative that becomes positive only in a photonegative. DNA experts say there is evidence of human genomes found from blood cells. Historians say there is a written record back to at least the sixth century.