Sarcoidosis is a granulomatous disorder of unknown cause. affecting multiple organs. but mainly the lungs. The exact order of immunological events remains obscure. https://www.roneverhart.com/HGST-Ultrastar-7K6000-HUS726040ALS214-4TB-7-2K-RPM-SAS-12Gb-s-512n-128MB-3-5-SE-Hard-Drive/