I. P. Pavlov with Niels Bohr and Mrs Bohr, 1935.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: I. P. Pavlov with Niels Bohr and Mrs Bohr, 1935. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: I. P. Pavlov with Niels Bohr and Mrs Bohr, 1935. Wellcome Collection. Source: Wellcome Collection.