DIED. JANET MARGOLIN, 50, actress; of ovarian cancer; in Los Angeles. Margolin's uncut emotion and striking brunet beauty were displayed to their greatest effect in her debut film, David and Lisa (1962), a ground-breaking study of disturbed teenagers with Margolin opposite Keir Dullea. In an utterly different vein, she is also remembered as the long-suffering wife of inept criminal Woody Allen in Take the Money and Run (1969).