Essential amino acids are organic compounds that your body needs to function. You can get them from certain foods. Amino acids, often referred to as the building blocks of proteins, are compounds ...

For the past few decades, research into stem cells, the building blocks of tissues ... number of different human antigens (the parts of the immune system that lead a body to reject a cell ...

Rock and dust samples retrieved by NASA from the asteroid Bennu exhibit some of the chemical building blocks of life, ...