Assertion: horseshoe crab's blood | /r/HasProperty | red
Facets:
value: because of the hemoglobin from iron
type: CAUSE
Source sentences:
text: The blood is notably blue because of the hemocyanin in copper, while human blood is red because of the hemoglobin from iron, which is why we don’t have the important blood-clotting protein.
text: Limulus is a true "blue blood" for, while human blood is red, the blood of this creature is a light blue.
text: Human blood is red because it has a red pigment called hemoglobin which contains iron.