But not all human cells possess mitochondria! Although that may sound strange, human red blood cells are the most common cells lacking mitochondria. Other examples include tissues of the eyes ...

Require immediate backup! Narrator: Your blood has different cells with different jobs. Some cells do repairs if you get a cut. Red blood cells deliver oxygen and take away rubbish. And your white ...

These include: Women of Childbearing Age – Due to menstrual blood loss. Pregnant Women – Higher iron demands for fetal development. Vegetarians and Vegans – Plant-based diets may lack ...