scientific drawing was given to me while I was a Freelance
Designer at Embryon (boy, is their Web site sorely out of date).
The original document was a scanned photocopy — yes, you read that right— and I redrew
(traced over) the entire drawing in Photoshop. The final PSD
contained 46 layers in nine layer sets.
compare the accuracy of the above redrawing with the original
scan, click here.
To see the redrawing at its full size, click here