Fig. 2a shows a three-dimensional reconstruction of thread packing within a developing hagfish gland thread cell.
Fig. 2b shows a three-dimensional reconstruction of 12 continuous loops of thread within a developing hagfish gland thread cell, revealing the pattern of thread coiling. One loop is highlighted in green. Other objects in the image are mitochondria (red) and nucleus (blue).
Fig. 2c shows our three-dimensional model of thread coiling within hagfish gland thread cells based on insights gleaned from Fig. 2b.