Iletin.jpg (download)‎ (282 × 200 pixels, file size: 9 KB, MIME type: image/jpeg)

Original Iletin--1923. This was made of beef and was Regular/neutral insulin. The 2 vial cartons illustrate the strengths insulin came in at the time; the carton on the left is U20 strength while the one on the right is U40. Originally uploaded by me at:

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current19:16, September 7, 2009Thumbnail for version as of 19:16, September 7, 2009282 × 200 (9 KB)We hope (Talk | contribs)

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