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competence(especially ETHNOMETHODOLOGY, and by analogy with linguistic competence -see COMPETENCE AND PERFORMANCE) the fundamental capacities (TACIT KNOWLEDGE, etc.) displayed by social actors as 'S killed’ participants (‘members’) in social contexts. See also SACKS.
(1) In immunology, the capacity of the human body or that of any warm-blooded animal for specific immune response (mainly antibody formation), which may be achieved by the collaboration of cells of several categories—principally the immunocompetent (antigen-sensitive and antigen-reactive) lymphoid cells. These cells “recognize” antigen, since even before encountering it they bear a special receptor or synthesize small amounts of immunoglobulins.
In rats and mice, before immunization, approximately one in 5,000 lymphoid cells of the spleen and blood binds a particular antigen—that is, the cell is immunocompetent for that antigen. After stimulation by antigen, immunocompetent cells are transformed into either the precursors of plasma cells, which secrete various immunoglobulins, or sensitized lymphocytes, which are the bearers of structural antibodies. Clones of immunocompetent cells, or X cells, apparently originate from the polypotential stem cells, or S cells (the precursors of all hemopoietic and lymphoid cells), probably under the influence of the hormone of the thymus. In the X cells, the genes that control synthesis of the heavy and light chains of immunoglobulins are probably successively activated and repressed upon encountering antigen. The descendants of X cells are capable of synthesizing antibodies according to an already selected program.
REFERENCEFridenshtein, A. Ia., and I. L. Chertkov. Kletochnye osnovy immuni-teta. Moscow, 1969.
T. A. DETLAF
the aggregate of powers (rights and obligations) of some body or official person, as established by the law, the bylaws of the particular body, or other statutes. The competence of judicial bodies is ordinarily determined by law. In the USSR the competence of judicial bodies is determined by the Constitution of the USSR, the constitutions of the Union and autonomous republics, the Statute on the Supreme Court of the USSR of 1957, the Statute on Military Tribunals of 1958, USSR and republic legislation on judicial organization, and criminal procedure and civil procedure legislation.