Galyl, luargol, and other preparations act in the same way as the "606"
and "914" groups.
The "606" preparations may be introduced into the veins by injection or
by means of an apparatus which allows the solution to flow in by
gravity. The left median basilic vein is selected, and a platino-iridium
needle with a short point and a bore larger than that of the ordinary
hypodermic syringe is used. The needle is passed for a few millimetres
along the vein, and the solution is then slowly introduced; before
withdrawing the needle some saline is run in to diminish the risk of
thrombosis.
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