chaosophia218: Fritz Kahn - The Purkinje Vein Figure (Impulse-Conducting Network of the Heart), “Das Leben des Menschen”, 1931.

chaosophia218: Fritz Kahn - The Purkinje Vein Figure (Impulse-Conducting Network of the Heart), “Das Leben des Menschen”, 1931.

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from: https://www.tumblr.com/blog/view/skoll69/185059497380