the condensed chromatin in the oocyte nuclei at the early -- late preleptotene stages and the thread-like chromosomes in the oocyte nuclei at the middle preleptotene -- early leptotene stages either closely adjoin to ifb , localized in the centre of the nucleus , or are situated at some distance from it , and then the fibrils or fibrillar filaments are seen between chromosome material and ifb .
C0019397
condensed chromatin
C0007610
nucleus