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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Chromosome Res. 2012 Dec;20(8):971–978. doi: 10.1007/s10577-012-9331-y

Fig. 3.

Fig. 3

Formation of human LBCs from sperm heads injected into the GV of the newt Notophthalmus. a–c A single sperm head 25 h after injection has resolved into a loose cluster of individual chromatids that show active transcription (pol II stain in c). d–f A single human chromatid with an overall length of about 60 μm. Note the long transcription loops (arrow) visible by phase contrast (d) and by staining with an antibody against pol II (f). DAPI staining reveals condensed chromatin along the chromosome axis (e).