title: Difference in interphase nucleus organization within the genus Xiphophorus (Pisces, Poeciliidae).
mesh_terms: D000818:Animals; D002455:Cell Division; D002467:Cell Nucleus; D046508:Culture Techniques; D004847:Epithelial Cells; D005399:Fishes / Q000166:cytology*; D006824:Hybridization, Genetic; D008264:Macrophages / Q000166:cytology; D008857:Microscopy, Interference; D008858:Microscopy, Phase-Contrast