The design, development and documentation of software. See software engineer, systems analysis & design, programming, object-oriented programming, software metrics, CASE and Systemantics.
Overview. Posttransplant lymphoproliferative disease (PTLD) is an unusual entity that has many features of an immune system malignancy. It is characterized by uncontrolled proliferation of lymphoid lineage cells (typically B cells, rarely non-B lineage) in a context of posttransplant immunosuppression.
1. PTT is âpartial thromboplastin timeâ and PT is âprothrombin time.â. 2. The PT measures the extrinsic coagulation pathway by calculating the prothrombin ratio along with the international normalized ratio. 3. The PTT is a measurement of the intrinsic coagulation pathway and the common coagulation pathway.