'Wellcome' Insulin : made with pure crystalline insulin : 'Wellcome' Protamine Insulin (with Zinc) - suspension.

Date:
[between 1931 and 1939?]

Licence: In copyright

Credit: 'Wellcome' Insulin : made with pure crystalline insulin : 'Wellcome' Protamine Insulin (with Zinc) - suspension. Source: Wellcome Collection.

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