Historical clue formulations

• Iron-rich molecule in blood — 2024-11-14
• Blood pigment — 2020-09-19
• Deep red pigment — 2018-01-27
• Pigment in red blood cells — 2017-09-17
• Myoglobin component — 2010-07-16
• Blood pigment — 2001-01-12
• Blood pigment — 2000-05-07
• Blood pigment — 1999-07-11
• Blood pigment — 1994-02-13