https://s3.envato.com/c7b2b9e0-095b-4e7d-a004-a7957c71c805/watermarked_preview/watermarked_preview.mp4 Videohive - Blood cells moving through the vein. Erythrocytes and platelets. - 41923934 https://videohive.net/item/blood-cells-moving-through-the-vein-erythrocytes-and-platelets/41923934