The fourth chromosome: interspersed euchromatic and heterochromatic domains. - Sun, F.L.; Cuaycong, M.; Craig, C.A.; Wallrath, L.L.; Locke, J.; Hodgetts, R.; Elgin, S. (Program and Abstracts. 40th Annual Drosophila Research Conference, Bellevue, 1999, 1999)