Stamped concrete refers to the process of decorating concrete once it has been laid by an installer. Professional landscaping and patio companies use the same type of concrete used in driveways and other projects, and the material consists of a sandy substance that the installer mixes with water.
The major organs of the immune system are bone marrow, thymus, spleen and lymph nodes. These organs produce lymphocytes required to destroy bacteria, virus, tumor cells, etc. This article dwells on these major immune system organs that protect the human body from infections.
âSecondary organsâ - these immune organs are spots or sites in which the lymphocytes localize, identify unfamiliar antigens and triggers reaction in opposition to it. It Contains tonsils, lymph nodes, Spleen, Peyerâs patches (in the small intestines), appendix and liver.