[OldGuyInTheClub]

Takes me back to organic chemistry classes decades ago where molecules were often printed in stereo pairs to break out of 2D thinking about 3D structures. One could use special glasses or train the eyes to see them. The latter method had the risk of getting left/right reversed which is a big deal when looking at chiral molecules where "handedness" is critical.

[gilleain]

Scientific papers use (still?) stereo images, for example those made using ORTEP:

https://www.umass.edu/molvis/francoeur/ortep/ortep.html

although seeing something like an alfa-helix as 3D might require some familiarity with the structure in the first place!

[OldGuyInTheClub]

Thanks for the pointer! I haven't followed the chemistry/biochemistry literature for years. I just assumed that 3D visualizations would have taken over.