Background. Proteins are the workhorses of the cell. This is no doubt an authentic statement about proteins. From their discovery up to now, these are believed to be the main biomolecule for maintaining all regulatory and structural activities of the body. Scientists are working for years in order to explore new proteins and this passion always leads them to new discoveries and innovations. Millions of proteins have been discovered performing tremendous functions inside the human body. In recent research investigators from Imperial College UK, have discovered an incredible novel protein named LEM Protein Lymphocyte Expansion Molecule, that boosts the body’s own immune system to fight against cancer in such a way that was not possible in the past. Said by the lead investigator Professor Philip Ashton Richard, Department of medicine at Imperial College UK.