. . . . . . . "NCI: A viral and cellular gene. A proto-oncogene, identified in several avian tumors, encoding a nuclear protein with a leucine zipper motif.,NCI: This gene plays a role in cell cycle progression and apoptosis. Cytogenetic aberrations in the gene are involved in cellular transformation and are associated with a variety of hematopoietic tumors, leukemias and lymphomas." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .