scienceillustrated.com.au | 69In 1951, American scientists isolated HeLa cells for the first
time in a patient with cervical cancer. The cells, which are
named after the patient, Henrietta Lacks, were the first
discovered by scientists to be naturally immortal - they can
divide indefinitely, providing scientists with a unique
opportunity to cultivate and study human cells in the lab.
Since then, the cells have played an important role in
medicine. In 1954, virologist Jonas Salk used HeLa cells to
develop the vaccine against polio.Vitamin C is a vital vitamin for animals as well as for
humans. Iron and vitamin C are necessary for us to be able to
produce one of the 20 amino acids which the body uses to
produce protein. The amino acid forms part of the collagen
protein which exists in tendons, cartilage, gums, and bones.
Lack of vitamin C also involves lack of collagen, resulting in
the tiniest of blood vessels becoming less durable, poor
wound healing, and finally perhaps even scurvy. In the
image, you see air bubbles in liquid vitamin C.Cancer cells look like fl y eyes
Liquid vitamin C looks like
quicksilver marblesEnlarged: 60 TIMES
Enlarged: 50 TIMES
MAREK MIS/NIKON SMALL WORLD & SHUTTERSTOCKDR. DYLAN BURNETTE/NIKON SMALL WORLD & EYE OF SCIENCE/SPL & SHUTTERSTOCK