as shown using electron microscopy of spread chromatin from such injected oocyte nuclei , this process of loop retraction was accompanied by the appearance of variously-sized and irregularly-spaced gaps within transcriptional units of chromosomal loops but not of nucleoli , indicating that the transcription of non-nucleolar genes was specifically inhibited by this treatment and hence involved an hmg-1-like protein .
C0007610
nuclei
C0007609
nucleoli