These pictures were captured with the DC5-163 digital microscope. In order to prepare the blood cells, an employee at Microscope World used a clean needle to prick his finger and placed a small drop of blood on a blank glass microscope slide. A cover slip was immediately placed over the small drop of blood and it was given time to dry. While the specimen was drying, the employee used an alcohol swab to clean his pricked finger and put a bandage on it to keep bacteria out it.
These images were captured at 400x magnification. Notice how many cells fill the field of view at 400x magnification! The larger gray areas are air pockets that were caught between the slide and cover slip.