Science: Molecular model of an antibody

This Y-shaped protein is produced by B-lymphocyte white blood cells as part of an immune response. The ‘limbs’ (upper left & right) bind to foreign antigens such as the surface proteins of invading bacteria, preventing them from interfering with normal cell processes. Bound antibodies can also make it easier for macrophage white blood cells to digest antigens, as well as triggering the breakdown of foreign cells by the complement system.

Science photography: Blood cells

Coloured scanning electron micrograph (SEM) of red blood cells (erythrocytes) and a white blood cell (leucocyte, pink, upper centre). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells. They circulate around the body in the blood and also remove carbon dioxide to the lungs for exhalation. Their red colour comes from the oxygen-carrying protein haemoglobin. Red blood cells are the most abundant cell in the blood. They have no nucleus and are about 7 micrometres in diameter. White blood cells perform functions ranging from cleaning up cellular debris, to defending the body against bacteria and other pathogens.

Heart Attack - Watercolor EKG painting

Source: Etsy - Artologica

Medical photography: Blood clot

  Source: thecoloradopursuit