It will have blood, they say; blood will have blood – Shakespeare.
• Blood is thicker than water, but it sure does die young. Did you know that the average red blood cell lives not more than 120 days, and 2 million of them die every second?
• Old age and the passage of time teach all things – Sophocles
The oldest intact human red blood cells were discovered in May 2012 in Ötzi the Iceman, a natural mummy of a man who died around 3255 BCE.
• My love is like a red, red rose – Robert Burns
Blood is red because of the spectral properties of iron, four of which are attached to each of ~270 million molecules of hemoglobin in each red blood cell. Each iron in heme ferries one molecule of oxygen.
• She got her looks from her father. He’s a plastic surgeon – Groucho Marx
Plastinated blood vessels of the human face are seen at the Human Body exhibition in Ostend, Belgium. Plastination is a technique that replaces water and fat with plastic, to preserve detailed anatomy. Photograph: Francois Lenoir/Reuters