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.
A top-level domain (TLD) is the part of the domain name located to the right of the dot (.). The most common TLDs are .com, .net, and .org. Many domains, also called extensions, can be registered by anyone, like .com, .net, and .org.