Top 102 Master Degrees in Medicine 2017. A student may choose to pursue a masterâs degree after receiving their bachelorâs degree. This postgraduate program typically takes about two to three years to complete.
The spleen and the thymus are also lymphoid organs of the immune system. The tonsils are lymphoid organs that are also associated with the digestive system. Lymphoid tissues contain lymphocytes, and also contain other types of cells for support.
Advertisements: Secondary lymphoid organs: Secondary lymphoid organs are also known as peripheral lymphoid organs. These are the organs or regions where the mature and immuno competent lymphocytes colonize and function in response to antigenic stimuli.