Immunoelectron microscopic localization of small nuclear ribonucleoproteins and interchromatin granules in the 2-cell mouse embryo V. Baran, I. Melčák, J. Otcovský and V. Landa Reprod. Nutr. Dev., 33 5 (1993) 447-454 DOI: 10.1051/rnd:19930505