article_snippet: While over time, the skin, hair and flesh of a skull rotted away, the fats and proteins of the brain tissue linked together to form a mass of large complex molecules.
article_snippet: While over time, the skin, hair and flesh of the skull rotted away, the fats and proteins of the brain tissue linked together to form a mass of large complex molecules.
highlights_snippet: Fats and proteins  linked together to form a mass of complex molecules too .
  