The patent expiry of Merckâs Singulair in 2012 and Advairsâ in 2016 will shift the manufacturers to generic drugs. The purchasers will have high bargaining power due to large competition in the market and cost consciousness is expected to remain one of the major constraints in the COPD and asthma drug market.
Lymphocytes are different from other types of white blood cells because they recognize and remember invading bacteria and viruses. T lymphocytes, or T cells, are responsible for cell-mediated immunity. T cells come in many types with specific functions, including: 1  Helper T cells direct the immune system. 2  Cytotoxic T cells release certain chemicals that break open to kill invading organisms. 3  Memory T cells remain after this process to help the immune system respond more quickly when the same organism is encountered again. 4  Suppressor T cells do ...
T-cells, also called thymus cells or thymocytes, are a type of white blood cell called lymphocytes. They help fight against disease and infection. T-cells cells play a vital role in cell-mediated immunity.