Masuhara M, Wada Y, Tatsumi N
Tohoku J Exp Med. 1979 Nov;129(3):219-23. doi: 10.1620/tjem.129.219.
HMM-decorated filaments could be observed in the leukocyte nucleus under an electron microscope. The filaments were distributed in parallel or randomly among chromatin granules and showed "arrowhead" structures similar to those of cytoplasmic filaments. These observations suggest that the leukocyte nucleus may possess contractile filaments containing actins which probably function in the structural transformation of the nucleus.
