Think first of the use contemporary artists make of human bodies: hair teased into patterns that form Chinese characters, or woven into a rug, or plucked from the artist's body to be inserted into a diminutive waxwork rendition of the corpse of the artist's father; blood let drip from self-inflicted wounds onto canvas, or made into a self-portrait bust; marks made on drawings - or over crucifixes - by ejaculating over them; cosmetic surgery undergone as performance art; human ears grown in Petri dishes; a baby's corpse cooked and (apparently) eaten.