title: On the nature of achromatic lesions ("gaps") induced by X-rays in chromosomes of Vicia faba.
mesh_terms: D002842:Chromatids; D002875:Chromosomes / Q000032:analysis / Q000528:radiation effects*; D004247:DNA / Q000032:analysis; D006652:Histological Techniques; D008853:Microscopy; D008855:Microscopy, Electron, Scanning; D008938:Mitosis / Q000528:radiation effects; D011830:Radiation Effects; D012639:Seeds / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D004247:DNA