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Posts tagged "stone knives"

MEXICO CITY — Researchers in Mexico say they have found clear evidence of blood cells and tissue fragments including muscle and tendon on 2,000-year-old stone knives.

Mexico’s National Institute of Anthropology and History says the finding clearly corroborates accounts from later cultures about the use of sharp obsidian knives in human sacrifice.

Other physical evidence such as cut marks on human skeletons had previously offered indirect proof of the practice.

The institute said Wednesday that it took a methodical examination using a scanning electron microscope to positively identify the tissues on 31 knives from the Cantona site in the central Mexico state of Puebla. (source)