Thus, to demonstrate that an O-glycosylated form of moesin (O-moesin) is expressed in both CD4+ and CD8+ cell subsets, we performed precipitation and cross-recognition assays using an anti-moesin mAb and ALL in protein extracts from 48 h activated CD4+ and CD8+ T lymphocytes. The gene discussed is CD8A; the disease is acute lymphoblastic leukemia.