Tooth enamel
Tooth enamel is the hardest and most highly mineralized substance of the body,Ross et al., p. 441 and with dentin , cementum , and dental pulp is one of the four major tissues which make up the tooth . It is the normally visible dental tissue of a tooth and must be supported by under more
Chromatophore chromatophores mediate background adaptation on exposure to dark (top) and light environments (bottom).
Chromatophores are pigment -containing and light-reflecting cells found in amphibian s, fish , reptile s, crustacean s, and cephalopod s. They are largely responsible for generati more
Rudolf Vrba
Rudolf 'Rudi' Vrba, born Walter Rosenberg (September 11 , 1924 – March 27 , 2006 ), was a professor of pharmacology at the University of British Columbia . He came to public attention in 1944 when, in April that year, he and a friend, Alfréd Wetzler , became the second and third more
DNA
Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The main role of DNA molecule s is the long-term storage of information . DNA is often compared to a set of blueprints, since it cont more
Prostate cancer
Prostate cancer is a disease in which cancer develops in the prostate , a gland in the male reproductive system . It occurs when cell s of the prostate mutate and begin to multiply out of control. These cells may spread (metastasize ) from the prostate to other parts of the bod more