What are red blood cells?
Red blood cells are a type of blood cell.
Erythrocytes are also known as red blood cells.
What do red blood cells look like?
Red blood cells usually look like donuts, but with a thin center instead of a hole. (2)
What is need to produce red blood cells?
vitamin B12 (1)
What do red blood cells contain?
hemoglobin (2)
Resources
1. https://my.clevelandclinic.org/health/diseases/22831-vitamin-b12-deficiency
2. https://www.verywellhealth.com/importance-of-hemoglobin-2249107
