Soon the deoxygenated red blood cells are back in the lungs, where the hemoglobin molecules will release the carbon dioxide and be recharged with life - sustaining oxygen ​ — a process that is repeated many thousands of times during a red blood cell’s life span of about 120 days.
მისი სიცოცხლის ხანგრძლივობა დაახლოებით 120 დღეს შეადგენს.