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.
However, your feedback is important to us. A partial thromboplastin time (PTT) test is a blood test that helps doctors assess your bodyâs ability to form blood clots. Bleeding triggers a series of reactions known as the coagulation cascade. Coagulation is the process your body uses to stop blood loss. Cells called platelets create a plug to cover the damaged tissue. Then your bodyâs clotting factors interact to produce a blood clot.