The top layer of the epidermis is composed of flattened, dead skin cells that form the surface of the skin. The dead cells from this layer are continuously being shed and replaced by cells from the living epidermal layer below it (red)
A Human retina is seen with the cones in the middle of the image, surrounded by capillaries and nerve cells, seen in black. retina under the microscope microscopic retina photography art photo microscopy artwork
May is asthma awareness month - asthma is the most common reason children miss school. Children who have can find it difficult to participate in school, work, sports, and even play. Learn the facts on asthma to help your child breathe easier.