With a conferencing API, that same on-demand service can be integrated into another Web-based software application, like an instant messaging program or a Web calendar. The user can schedule a Web conference in his Web calendar program and then click a link within the same program to launch the conference.
3. Blood coagulation-Clots form upon the conversion of fibrinogen to fibrin, and its addition to the platelet plug (secondary hemostasis). Coagulation: The third and final step in this rapid response reinforces the platelet plug.
Generally, these substances must be covered with opsonins, such as antibodies or complement, to initiate binding with cell receptors on the phagocytes, the first stage in phagocytosis. In the second stage, the particle is engulfed and enclosed in a vacuole (phagosome). During the third stage, the phagosome merges with lysosomes whose enzymes destroy the engulfed particle. See: illustration; defensin; lysozyme; macrophage; neutrophil; oxygen radical.