Intercalary heterochromatin in Drosophila melanogaster polytene chromosomes and the problem of genetic silencing

Igor F. Zhimulev, Elena S. Belyaeva, Igor V. Makunin, Vincenzo Pirrotta, Valery F. Semeshin, Artyom A. Alekseyenko, Stepan N. Belyakin, Elena I. Volkova, Dmitry E. Koryakov, Evgeniya N. Andreyeva, Olga V. Demakova, Irina V. Kotlikova, Tatyana D. Kolesnikova, Lidiya V. Boldyreva, Roman A. Nanayev