The Red One Carries Oxygen

This page is the CodyCross answer for the clue below from Medieval Times, Group 236, Puzzle 3 (Corvee and Banalites).

Question is: The Red One Carries Oxygen

and the answer is: BLOODCELL

Word Meaning:

BLOOD CELL — (hematology, cytology) Any of the cells normally found in blood, namely erythrocytes and leukocytes, sometimes including the platelets.

Definitions from Wiktionary.