Here in this video I wanted to capture a little of what I saw in this course, where I will soon tell you the story of this great journey how it began, which made me want to go, but I want to show you this specific fragment where I was stunned, The Erythrocytes (Red Blood Cells) They are that pile of little balls that you see, and the one that has a color like purple or blue king are white blood cells, which are part of the immune system. This made me fall a little more in love with science.