This image is of a purple, colour-enhanced human egg sitting on a pin. The egg is coated with the zona pellicuda, a glycoprotein that protects the egg but also helps to trap and bind sperm. Two coronal cells are attached to the zona pellicuda.
White blood cells. Coloured scanning electron micrograph (SEM), showing white blood cells present in a urine sample taken from someone with a urinary tract infection (UTI). The number of white blood cells in urine sediment is normally low. When the number is high, it indicates an infection or inflammation somewhere in the urinary tract. Magnification: x2600 when printed to centimetres wide.
scienceyoucanlove: “ Brain and spinal cord with dural membranes (meninges) still intact, held aloft and viewed posteriorly. Below the skull and around the spinel cord are three special coverings called the meninges. You may have heard of the illness.
red blood cells trapped by fibrin threads Fibrinogen is an insoluble protein made by the liver and floats around in the blood. It is converted to fibrin by thrombin, a clotting enzyme, at bleeding sites.