Cut into strips to show original structure. These are now processed as further described.
Ground fine in acid alcohol water mixture. The liquid is separated from the glands by filtration.
Filtrate from No. 2 is concentrated and material insoluble in acid water removed. Solution is then saturated with sodium chloride and the precipitate formed contains Iletin (insulin, Lilly).
Solution in water of the precipitate from No. 3 after further purification by alcoholic fractionation.
This is the colorless finished product in one of the commonly used strengths. This very highly purified colorless solution is obtained through repeated iso-electric precipitation of solution No. 4.
made from zinc-Insulin crystals: This represents a solution of pure zinc-insulin crystals. The crystals used have been prepared from Iletin (Insulin, Lilly) and zinc.
This product is prepared by adding protamine, zinc, and phosphate buffer to Iletin (Insulin, Lilly).
Glands are removed from the chill room by conveyer and emptied into the hopper from the floor above.
used in the manufacture of Iletin (Insulin, Lilly) preparations.
for the final purification of Iletin (Insulin, Lilly) preparations.
of Iletin (Insulin, Lilly) preparations in glass-enclosed, air-conditioned room.