Body fluids in art

Occasionally in contemporary art, artists use body fluids as a medium in their art. Examples include:

Depicting objects of popular respect (religious subjects, flags, etc.) in art which includes body fluids can trigger public protests due to such material's historic association with dirtiness. The outcry about the Piss Christ photo is an example.

In addition to the obvious difficulties of preserving perishable material, there can be regulations complicating transport by rail, truck, or aircraft of liquid body fluids due to the fluids' possible classification as dangerous goods. Postal or transportation-security authorities might consider blood, spittle, excrement, etc., to be bio-hazardous substances.

The sale of blood art via eBay is prohibited as eBay prohibits the sale of body parts, and classifies blood art as falling under this heading.

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Wikipedia