OBSOLETE. Any apoptotic process in a transformed cell, a cell that has undergone changes manifested by escape from control mechanisms, increased growth potential, alterations in the cell surface, karyotypic abnormalities, morphological and biochemical deviations from the norm.

OBSOLETE. Any apoptotic process in a cell infected with a virus.

OBSOLETE. The directed, self-propelled movement of a cell or subcellular component without the involvement of an external agent such as a transporter or a pore.

The formation of a cell surface protrusion, such as a lamellipodium or filopodium, at the leading edge of a migrating cell.

The translocation of the cell body forward during cell migration, mediated by tractional force on its substrate and tension in the cortical cytoskeleton. Adhesions transmit propulsive forces and serve as traction points over which the cell moves.

The formation of adhesions that stabilize protrusions at the leading edge of a migrating cell; involves integrin activation, clustering, and the recruitment of structural and signaling components to nascent adhesions.

The directed movement of accumulated adhesion components such as integrins from the rear of a migrating cell toward the cell front, where they are available to form new protrusions and adhesions.

The disassembly of adhesions at the front and rear of a migrating cell. At the leading edge, adhesion disassembly accompanies the formation of new protrusions; at the cell rear, it promotes tail retraction.

A process in which force is generated within muscle tissue, resulting in a change in muscle geometry. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis.

OBSOLETE. The conversion of chemical energy into mechanical work (as in the contraction of a muscle).

OBSOLETE. The fusion of two haploid nuclei to form a single diploid nucleus, as seen in the yeast mating process.

The volume enclosed by the membrane of an early endosome.

The process of syncytia-forming cell-cell fusion, caused by a virus.

The volume enclosed by the membranes of a glyoxysome.

The outer, i.e. cytoplasm-facing, lipid bilayer of the chromoplast envelope.